Looking for clear proof that replacement windows pay off in Lafayette, we will map out costs, savings, and trade-offs. Hot, humid summers, frequent rain, and the occasional Gulf storm put unique pressure on window performance here. This list-style guide focuses on ROI, but it also covers how to choose the best replacement windows in Lafayette LA, what to expect during window installation in Lafayette LA, and which window styles make sense for our weather.
1) The Lafayette ROI picture: what pays back and when
Here is the straight read on return on investment for windows in Lafayette. You pay for thermal performance, weather resilience, and curb appeal. You get paid back through lower utility costs, fewer comfort complaints, and resale value. The energy savings piece hinges on two core metrics: U-factor for insulating value and Solar Heat Gain Coefficient for how much Louisiana sun gets through the glass. For Lafayette, a lower SHGC is just as important as a low U-factor because summer cooling drives most utility costs.
For most homes, a whole-house replacement with mid-tier energy-efficient vinyl windows in Lafayette LA will reduce cooling and heating energy use meaningfully. The payback period depends on your existing windows, AC efficiency, shading, and how much glass you have. If your current units are single-pane aluminum with failed seals, the annual savings can be noticeable. If you already have relatively modern double-pane units in decent shape, expect more modest gains.
For context, I model ROI three ways during in-home assessments:
- Baseline efficiency model based on HVAC tonnage, window area, and orientation. Peak-load comfort model that shows how fast indoor temps recover after a heat spike. Humidity and condensation risk model for our damp season.
Looking at hundreds of Lafayette homes, the trend holds: the biggest energy savings come from south and west facing glass, from eliminating leaky frames, and from dialing in SHGC for summer. Insulated frames and proper installation quality keep those savings locked in.
Bottom line on the headline numbers, a realistic energy payback window in Lafayette runs 5 to 10 years for inefficient starting points, and 10 to 15 years for homes with passable double-pane windows. Resale value often offsets 30 to 60 percent of the project cost within two years if you are listing soon, which shortens the effective payback in the first case.
2) Know the signs you need window replacement in Lafayette LA homes
Start by confirming it is time. The signs you need window replacement in Lafayette LA homes are specific and repeatable across our climate:
Air infiltration you can feel. If smoke from a stick drifts horizontally near the sash on a breezy day, the weatherstripping has failed or the frame is out of square.
Condensation between panes. Fog in insulated glass means a failed seal. That unit has lost its insulating gas and will perform worse until replaced.
Swollen sashes and sticky operation. Lafayette humidity swells wood and low-quality composites. If the window binds or you need two hands to lift, heat and moisture have done their work.
Soft or crumbly sills. Probe wood sills and brickmould with a screwdriver. Soft spots mean rot that spreads quickly in our rainy seasons.
Noise leakage. If road noise or mower hum sounds like the source is in the room, your seals, glazing, or both are no longer isolating sound.
UV fade lines. Notice a sharp fade gradient on flooring or sofas near west windows. That signals inadequate low-E performance for our sun angle.
If two or more of these show up, energy-efficient window replacement becomes both a comfort upgrade and a cost-control move.
3) Choosing energy-efficient window features for Lafayette LA weather
This is where ROI gets real. Energy-efficient window features for Lafayette LA weather revolve around three things: solar control, air sealing, and durable materials.
Low-E coatings tuned for the South. Look for spectrally selective low-E that reduces solar heat gain while keeping visible light high. You want SHGC in a range that tames afternoon heat, usually lower for west and south elevations than for shaded or north windows.
Argon-filled double-pane glazing. Argon improves insulating value affordably. Krypton is overkill for most Lafayette homes unless you are chasing passive-house numbers in very small cavities.
Warm-edge spacers. Non-metallic or hybrid spacers reduce edge-of-glass heat transfer, help prevent condensation, and lengthen seal life in humid conditions.
Compression seals and multi-point locks. Screw-applied compression gaskets and locks that pull sashes tight limit infiltration, which keeps AC runtime down during the July peak.
Thermally broken frames. Vinyl and fiberglass offer inherent breaks, while aluminum needs a pronounced thermal break to avoid heat transfer and condensation.
Beyond those must-haves, consider laminated or impact glass. It adds a security and storm-resilience layer and noticeably reduces outside noise in Lafayette LA. Tying security, storm prep, and energy management together makes the investment easier to justify.
4) Vinyl vs wood vs fiberglass vs aluminum in Lafayette
Material choice drives long-term ROI. Comparing vinyl vs wood windows in Lafayette LA is common, but do not overlook fiberglass or thermally broken aluminum.
Vinyl. How vinyl windows improve energy savings in Lafayette LA is straightforward. Hollow chambers curb heat flow, welded corners block drafts, and modern low-E packages handle our sun. Vinyl is the best low-maintenance windows for Lafayette LA homeowners who want low upkeep, good energy numbers, and stable pricing. Quality matters, though. Cheap vinyl chalks and warps in our UV. Choose heavier frames with titanium dioxide in the mix.
Wood. Wood insulates well and looks right in older neighborhoods. In Lafayette humidity, though, wood demands vigilant painting and caulking. For window replacement tips for older homes in Lafayette LA, I often specify wood or clad-wood on historic facades, then use vinyl or fiberglass on less visible elevations to control cost and maintenance.
Fiberglass. Strong, dimensionally stable, and paintable. It holds its shape in temperature swings, which protects seals. Upfront cost is higher than vinyl, but the durability pays back if you plan to stay put.
Thermally broken aluminum. Sleek sightlines and hurricane-rated options exist. Without a robust thermal break, aluminum sweats in our humidity. Use it when slim frames or commercial aesthetics matter and you are pairing with high-performance glass.
If you want the short version, vinyl or fiberglass wins for Lafayette budgets and humidity.
5) Style choices that affect savings, comfort, and use
Window style is not just looks. The best window styles for homes in Lafayette LA balance ventilation, sealing, and how your family uses the space.
Are double-hung windows worth it in Lafayette LA? They match local architecture, clean easily from inside, and with decent weatherstripping can be energy efficient. For families with kids, the ability to vent from the top is a safety plus. The drawback is more moving seams which can leak air on low-end models.
Pros and cons of casement windows in Lafayette LA. Casements press the sash into the frame when locked, creating an excellent air seal. They catch prevailing breezes, so how casement windows improve airflow in Lafayette LA homes is noticeable, especially on shaded sides. The con is clearance near shrubs or porches, and hardware that needs occasional lubrication.
Why homeowners choose awning windows in Lafayette LA. Awnings shed rain while open. During summer storms, you can keep airflow without soaking a room. They pair well high on walls or over sinks.
How slider windows improve ventilation in Lafayette LA. Sliders offer wide, horizontal openings, great for ranch layouts. Are slider windows energy efficient in Lafayette LA? Quality sliders with robust interlocks and rollers can be, but cheap sliders are drafty over time.
Picture windows ideas for modern homes in Lafayette LA. Fixed panes maximize light and view while locking in the best air seal. Pair a center picture unit with flanking casements to blend efficiency with ventilation.
Bay windows vs bow windows for Lafayette LA homes. How to choose between bay and bow windows in Lafayette LA comes down to geometry and light. Bays add a small shelf and architectural pop. Bows distribute light more evenly and can use narrower sashes for better sealing. Either design increases exposure to sun, so tune SHGC and consider exterior shading on west sides.
From a performance lens, fixed and casement units edge out double-hungs and sliders for sealing, but matching style to use case will keep you happier day to day.
6) Lafayette-specific energy math: how replacement windows help lower utility bills in Lafayette LA
This is the modeling workflow I use on Lafayette audits. Start with your AC tonnage, window area, and shading. Assign SHGC targets by orientation. Replace leakiest frames first to blunt infiltration. In most Lafayette homes, west glass is the budget priority because the late-day sun hits when the house is already warm.
I like clear, testable assumptions on bills:
- Typical single-family Lafayette home with 2,000 square feet, 12 to 18 percent window-to-wall ratio. Electric rates in the region often fall in a moderate band. Your bill variance month to month will tell the real story faster than regional averages. AC load dominates utility costs May through September.
Given those inputs, compare your existing window package to a replacement set with tuned SHGC and lower U-factor. The delta in HVAC runtime is where the savings hide. For many Lafayette homes with failing single-pane or early double-pane units, the first-year reduction in cooling energy lands in a noticeable range. If your starting point is already decent, savings compress, but comfort still jumps because infiltration drops.
On top of glass numbers, sealing and insulating the weight pockets on old wood double-hungs, or using foam around new construction flanges in full-frame replacements, avoids the chimney effect inside the walls. That single step often pays back faster than the upgrade from good to great glass.
7) Hurricane-resistant window options in Lafayette LA
In Acadiana, storm features protect value. Hurricane-resistant window options in Lafayette LA generally mean laminated glass, beefed-up frames, and stronger anchors. Impact glass holds together if shattered, keeping the envelope intact. That lowers the risk of pressure spikes that cause roof failure. Insurance discounts in some cases help offset costs. Check with your carrier for what's recognized.
Thermally, laminated glass adds a minor insulating bump and a major acoustic one. How new windows reduce outside noise in Lafayette LA is dramatic when you combine laminated glass with a tight frame. For people on Johnston Street, Ambassador Caffery, or near schools, the noise reduction is an everyday quality-of-life improvement.
If you want a phased path, prioritize first-floor bedroom windows and large openings on windward sides, then add shutters or panels for less critical locations.
8) What to expect during window installation in Lafayette LA
Good crews in Lafayette work a clean, tight sequence. Professional installers begin with pre-walks, measuring, and ordering. They verify egress codes, tempered-glass needs near tubs, and any HOA design rules. On install day, they set containment, remove sashes, and inspect openings for rot. Rot gets addressed before setting new frames.
Full-frame replacements allow them to flash and insulate the rough opening, which yields the best performance. Insert replacements save surrounding trim, speed the job, and cost less, but you retain any sins of the original opening. In older Lafayette bungalows with true divided lights, I often suggest full-frame on the worst three elevations and inserts where the frames are sound.
Expect expanding foam around frames, backer rod and sealant at the exterior, and head flashing that sheds our heavy rain. Crews should square sashes, check reveals, and test locks. Inside, they set stops and touch up paint or caulk.
Scheduling-wise, six to ten windows per day for a three-person crew, weather permitting. What to expect during window installation in Lafayette LA includes some AC loss while openings are exposed. Homeowners sometimes cool the rest of the house slightly beforehand to cushion the swings.
9) How to prepare your home for window installation in Lafayette LA
A little setup goes a long way. Use this quick pre-install day checklist:
- Clear 3 to 4 feet of space around each window, indoors and out. Remove blinds, shades, and curtains. Leave brackets if the installer agreed to rehang. Take down wall art on adjacent walls, vibrations can shift frames. Unlock gates and keep pets in a quiet room. Park cars to give the crew clear access to staging areas.
Additionally, label rooms and special instructions. If you have custom alarms on windows, schedule your alarm company to meet the crew or remove sensors the day before.
10) Common window installation mistakes in Lafayette LA
I inspect a lot of post-install problems. Common window installation mistakes in Lafayette LA include:
Skipping sill pan flashing. Our rain drives hard and finds laps that tilt the wrong way. A true sill pan or flexible flashing membrane under the window is non-negotiable.
Over-foaming. Expanding foam can warp frames. Use low-expansion foam made for windows and doors, applied in two light passes.
Ignoring weep paths. Some frames rely on weeps. If the installer buries them in stucco or caulk, water backs up into the frame.
Sealing to the wrong substrate. Sealant should land on clean, compatible surfaces. Dirty brick or chalked paint makes a weak bond that fails fast in heat.
Poor shimming. Windows need continuous support at key points. Random shims lead to sags, tight spots, and drafts.
Skilled labor pays for itself here: our moisture, heat, and wind will exploit weak details.
11) Double-hung, casement, awning, slider, picture: which saves the most here
Pick based on sealing and use. On pure air sealing, picture wins, casement is a close second, awning follows, then double-hung and slider jockey depending on quality. For real homes, weigh ventilation, safety, and furniture placement.
Advantages of double-hung windows for Lafayette LA families are about cleaning and safe top-venting. Why homeowners choose awning windows in Lafayette LA is rainy-weather airflow. How slider windows improve ventilation in Lafayette LA is broad openings on long walls. Choosing picture windows for scenic views in Lafayette LA gives you drama and light with minimal energy penalty, as long as SHGC is tuned.
Smart pairing: use picture or casement on west and south for sealing and solar control, then mix in double-hungs or awnings on shaded sides where natural ventilation drives comfort more than tiny differences in U-factor.
12) How Lafayette LA humidity affects residential windows
Humidity is our silent cost driver. Persistent moisture swells wood, feeds rot at sills, and attacks organic spacers between panes. Vinyl weathers humidity well but can trap moisture if weeps clog. Aluminum with poor thermal breaks condenses on humid mornings, dripping onto sills. Fiberglass stays dimensionally true, which protects seals.
Window condensation problems and solutions in Lafayette LA start with better interior humidity control. Keep indoor relative humidity around a practical range with HVAC runtime, bath fans, and kitchen exhaust. Warm-edge spacers and low-E coatings reduce interior surface temperatures, which cuts condensation risk. Ensure blinds do not seal glass into a cold pocket at night. Leave a small gap or use vented shades.
When preservation matters, a thoughtful rehab can buy time. Weatherstrip, add interior storm panels for the summer, and repair glazing putty. But when you fight swelling and rot every season, replacement stops the bleeding.
13) How often should windows be replaced in Lafayette LA
There is no single clock. Quality vinyl and fiberglass windows can run 20 to 30 years here with proper sealing and cleaning. Wood needs scraping and painting cycles, and unmaintained wood can fail in under 10 to 15 years in our humidity. Aluminum frames last structurally but may perform poorly thermally and collect condensation long before they physically fail.
When do you replace when energy waste, leaks, or maintenance labor exceed the cost to repair and operate. If you are doing exterior repainting and caulking now, folding window replacement into that scope can save on scaffolding and labor overlaps.
14) Best custom window options for Lafayette LA homes
Smart customization targets Lafayette realities. Best custom window options for Lafayette LA homes include SHGC by orientation, laminated glass on noisy sides, and full-frame installs at perpetual rot zones like east-facing bath windows. Grids between glass keep cleaning simple in muddy spring rains. Factory-painted fiberglass hits historic color notes without the maintenance of field-painted wood.
For design ideas using bow windows in Lafayette LA, think of low benches with coastal fabrics and overhead shades to temper west sun. How bay windows add natural light to Lafayette LA homes is about depth and cross-light. Add operable flankers for airflow.
15) How replacement windows increase home value in Lafayette LA
Value takes a jump when the thermostat reads comfortably across rooms, sashes operate smoothly, and the street view looks crisp. New windows signal a tighter envelope, quieter rooms, and fewer weekend repairs. If you plan to list within two years, matching window style to neighborhood norms and investing in clean exterior caulking and trim pays off.
Best windows for improving curb appeal in Lafayette LA are those that unify grille patterns, align sightlines, and fix stained or swollen exterior trim. Replacement door options for improving curb appeal in Lafayette LA also matter. A clean, modern entry paired with fresh windows tightens the whole facade.
Financially, expect a notable portion of cost recouped in resale when windows are part of a broader refresh that includes paint, lighting, and modest landscaping. Isolated window projects still pull their weight, but synergy with the rest of the exterior drives the best return.
16) Vinyl maintenance and long-term performance
Keeping vinyl right is simple. How to maintain vinyl windows in Lafayette LA climate boils down to two habits: clean tracks and clear weeps. Dirt and pollen, both abundant here, collect in sills. Vacuum and wipe tracks with mild soap. Rinse weep holes each spring. Lubricate moving hardware annually with a silicone-based product. Avoid harsh cleaners that cloud low-E coatings.
Best low-maintenance windows for Lafayette LA homeowners will have color-stable exteriors, welded corners, and reinforced meeting rails. If you choose dark colors, confirm the manufacturer uses heat-reflective finishes to keep surface temperatures in check.
17) Doors matter too: patio and entry choices that affect energy and security
Do not ignore the biggest glass panel in the house. Benefits of installing patio doors in Lafayette LA homes include daylight and access, but they can leak energy and water if underbuilt. Sliding patio doors vs French patio doors in Lafayette LA is not just stylistic. Sliders usually seal better with modern interlocks, while French doors offer a wider clear opening for entertaining.
Energy-efficient patio doors for Lafayette LA homeowners should carry low-E glass with SHGC aligned to orientation, warm-edge spacers, and multi-point locks. What to know before installing new patio doors in Lafayette LA: sill pan flashing is critical here, even more than windows, because foot traffic and heavy rain collide. Best patio door styles for entertaining in Lafayette LA often pair a fixed panel with a large slider so you maximize view with controlled sealing.
For entries, how to choose the right entry doors in Lafayette LA leans toward fiberglass skins for stability and insulation. Best entry door materials for Lafayette LA weather are fiberglass or insulated steel with composite frames that do not wick water. How replacement doors improve home security in Lafayette LA comes from reinforced strike plates, longer screws that bite framing, and laminated glass in sidelites.
Front door replacement trends in Lafayette LA skew toward stained fiberglass that mimics cypress, with minimal grille sidelites and smart locks. Modern entry door styles popular in Lafayette LA favor clean slabs with three-quarter lites or horizontal lites that complement contemporary renovations.
18) Installer interview: top questions to ask before replacing windows in Lafayette LA
Interview well and you will avoid 90 percent of problems. Top questions to ask before replacing windows in Lafayette LA include:
What SHGC and U-factor combinations do you propose by orientation, and why for my house? Look for a Lafayette-specific answer, not a one-size-fits-all number.
Will you use sill pans or flexible flashing at every opening? If the answer is anything but yes, keep interviewing.
How do you foam and seal, and which sealants do you use on brick vs siding? Compatibility and sequencing matter.
Who handles rot repairs and what is the per-foot price if we find more than expected? Hidden rot is common here.
Can I see recent installs within 10 miles and talk to those homeowners? Local climate experience beats any brochure.
If a contractor dances around these, keep looking.
19) Common causes of drafty windows in Lafayette LA homes and fast fixes
Air leaks come from the same few places. Common causes of drafty windows in Lafayette LA homes include worn weatherstripping, loose sash locks, missing backer rod under exterior caulk, and frame racking from foundation movement. Fast fixes range from re-aligning strikes and replacing weatherstrips to adding interior storms on a tight budget.
At the replacement stage, prioritize frames that close with compression, multi-point locks, and factory-applied gaskets that tolerate heat cycles.
20) Putting pencil to paper: a simple ROI worksheet for Lafayette
Run this at your kitchen table. You need four inputs:
- Your current annual cooling and heating spend, from utility bills. A reasonable savings range based on your starting windows. Inefficient baseline, set a higher range. Decent baseline, use a lower one. Project cost estimates for your chosen material and scope. Any expected resale value lift if you will sell soon.
Say: a 2,000 square foot Lafayette home spends a mid-three-figure to low-four-figure amount annually to heat and cool. The existing windows are aluminum single-pane with fogged units on the west. A vinyl replacement package with tuned SHGC and argon double-pane glass comes in at a mid- to upper-teen thousand range. If your annual energy savings land in a few hundred dollars and you account for lower maintenance and improved comfort, the simple payback might hover under the low end of a decade. If you plan to sell within two years, and updated windows help your agent justify a higher asking price while speeding time on market, the effective payback shortens further.
Keep it conservative. Use the low end of savings for planning. If your home has heavy west exposure, single-story with big sliders, you can bias the estimate upward. If your AC is already very efficient and shading is generous, keep expectations modest.
21) Best replacement window materials for Lafayette LA homes, ranked by ROI
If you need a tie-breaker, here it is. Strictly on Lafayette ROI, including energy, maintenance, and install cost:
Vinyl. The top benefits of upgrading to vinyl replacement windows in Lafayette LA include low purchase price, good thermal numbers, and minimal upkeep. For many families, this hits the sweet spot.
Fiberglass. Higher upfront cost, excellent stability, paintable, and strong in humidity. Great for long-term owners or design-driven projects.
Clad-wood. Beautiful, strong insulators, but maintenance sits between vinyl and full wood. Good where HOA or style guides push you there.
Thermally broken aluminum. Use when slim sightlines or hurricane ratings at certain price points matter. Watch condensation and specify glass carefully.
With a long horizon, fiberglass rises. If you plan to sell in 3 to 7 years, quality vinyl leads.
22) Installation choices: full-frame vs insert, and where each wins
Do not let scope get decided for you. Full-frame replacement removes the old frame, exposes the rough opening, and lets crews flash and insulate correctly. It costs more and can disturb interior trim, but it solves hidden rot, air paths, and misaligned frames. Insert replacement keeps the old frame, sets a new unit inside it, and preserves casing and exterior finishes. It costs less and installs faster, but leaves any frame problems in place and slightly reduces glass area.
My rule of thumb locally: full-frame on elevations with known leaks or rot, baths and kitchens with high moisture, and anywhere the old frame is out of square. Inserts where frames are sound and you value trim preservation. Common window installation mistakes in Lafayette LA, such as skipping head flashing or stuffing foam without backer rod, happen in both methods. The crew’s discipline matters more than the method.
23) Noise, light, and comfort: quality-of-life ROI
Comfort counts too. How new windows reduce outside noise in Lafayette LA is night and day on busy corridors when you use laminated glass or mixed pane thicknesses. How bay windows add natural light to Lafayette LA homes boosts mood and reduces daytime lighting needs. Tuning SHGC preserves light while trimming heat. That is why energy-efficient windows keep Lafayette LA homes comfortable year-round, not just cheaper to run.
If your family naps midafternoon or you work from home, comfort improvements can be worth as much as the utility savings over the first few years. Buyers feel this in showings, which loops back into resale value.
24) Window and door remodeling ideas for Lafayette LA homes that stack ROI
Create compounding returns. Combine west-facing window upgrades with an energy-efficient patio door on the same elevation. Add exterior shade trees or a pergola where sunset blasts through glass. Upgrade attic insulation during the same project window, since crews and ladders are already mobilized. Modest steps like light-colored window treatments with reflective backings help hold the line on afternoon heat without sacrificing style.
What are the most durable replacement windows in Lafayette LA? The ones that balance frame stability, glass seal life, and quality installation. That is usually a heavier-gauge vinyl or fiberglass frame with warm-edge spacers and a contractor who flashes like it is second nature.
25) The streamlined decision path for Lafayette homeowners
If this all feels like a lot, use this path:
- Audit and prioritize. Identify signs you need window replacement in Lafayette LA homes, then rank elevations by sun and leak severity. Specify features. Lock in SHGC by orientation, U-factor targets, and frame material that fits your maintenance appetite. Choose scope. Full-frame where rot or misalignment exists, inserts where frames are sound. Select installer. Use the top questions to ask before replacing windows in Lafayette LA and insist on sill pans and proper sealants. Stage and verify. Prep the house, then test locks, weeps, and operation before final payment.
When all is said and done, you get comfort, curb appeal, and solid ROI without drama.
FAQ quick hits anchored to Lafayette realities
A few recurring questions come up in every consult.
How to choose the best replacement windows in Lafayette LA? Match SHGC to orientation, pick a frame you will maintain, and hire an installer who can replacement doors Lafayette articulate flashing and sealing steps for our rain and heat. Avoid overpaying for exotic glass if your exposure does not justify it.
Are double-hung windows worth it in Lafayette LA? Yes when you want classic looks, easy cleaning, and top-vent options. They are not the tightest-sealing style, so choose better weatherstripping and cams.
How slider windows improve ventilation in Lafayette LA? They open wide and suit long walls. Keep tracks clean to prevent grit from grinding rollers and loosening seals.
Common window installation mistakes in Lafayette LA? No sill pans, over-foaming, buried weeps, poor shimming, and wrong sealants. Ask your installer to show these details on the first opening.
How replacement windows increase home value in Lafayette LA? Buyers pay for quiet, comfort, and curb appeal. Modern, energy-efficient windows signal lower ownership costs, which supports price and speed of sale.
Best energy-saving door upgrades for Lafayette LA homes? Low-E, laminated glass in patio doors, multi-point locks, and sill pans. For entry doors, insulated fiberglass slabs with composite frames.
How to prepare your home for window installation in Lafayette LA? Clear space, remove window treatments, secure pets, open access, and coordinate alarms.
How window and door choices affect humidity and condensation? Warm-edge spacers, tuned SHGC, and air sealing cut interior glass temperatures and moisture accumulation. Pair that with exhaust fans and routine HVAC maintenance.
Final take: making Lafayette’s climate work for you
When you spec for Acadiana realities, windows become an asset instead of a recurring expense. Prioritize orientation-specific SHGC, solid air sealing, and materials that shrug off humidity. Sequence the project with a contractor who sweats flashing and weeps. Overall, that is how energy-efficient windows keep Lafayette LA homes comfortable year-round and how replacement windows help lower utility bills in Lafayette LA without overreaching the budget.
When you want to translate this into a plan, bring this guide to two or three reputable local installers, ask the five questions above, and compare not just prices but specs and details. Executed well, your Lafayette home will be cooler, quieter, and cheaper to run for years to come.