Top-Rated Insulation Installers in Worcester, MA
3 local companies ranked by 269 Google reviews. Free to compare, no sign-up.
Short answer: The top-rated insulation installers in Worcester are Modern Energy (4.9★, 202 reviews), Custom Insulation Company, Inc. (4.8★, 56 reviews), Green Insulation Group (5.0★, 11 reviews).
Insulation installers in Worcester, ranked
- 4.9 (202 Google reviews)24 Rockdale St, Worcester, MA 01606
- 4.8 (56 Google reviews)16 Jacques St, Worcester, MA 01603
- 5.0 (11 Google reviews)10 Pullman St, Worcester, MA 01601
Together these 3 companies average 4.9★ across 269 reviews. Modern Energy has the most reviews (202).
Ranked by Google rating weighted by review count, collected September 2026. Rankings are not paid for. How we rank and how we make money.
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What a insulation costs in Worcester
Price depends on which areas you insulate (attic, walls, basement) and how much air sealing is needed. Ask each company for a price per area and the R-value you end up with, so quotes are easy to compare.
Financing or future programs may still help. Check the rebate page before you sign.
Rebates: our verified program data, checked monthly. Always confirm the exact amount for your home.
Talk to a home energy auditor first. Some utility programs want an audit before any work starts. See the top-rated home energy auditors in Worcester.
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Why insulation matters in Worcester
In Worcester, the average January low is -6°C (21°F), colder than 65% of the 123 cities we track. Sealing air leaks and topping up the attic usually pays back fastest here. Basement walls and rim joists are often the next biggest heat loss in older homes.
Most rebate programs pay only after an energy assessment, and some need one before the work too. Book it first.
Source: Open-Meteo historical weather data, 2015-2024.
Before you hire an insulation installer
- Ask whether they will air-seal before insulating, and what they will seal (attic hatch, pot lights, pipes, top plates).
- Ask for the R-value before and after for each area, and the material and depth they will install.
- Ask whether your rebate needs an energy assessment before and after the work, and who books it.
- Ask how they handle ventilation and any old insulation that could contain vermiculite (asbestos risk).
Questions about insulation installers in Worcester
Who is the best insulation installer in Worcester?
Based on Google reviews, the top-rated insulation installers in Worcester are Modern Energy (4.9★, 202 reviews), Custom Insulation Company, Inc. (4.8★, 56 reviews), Green Insulation Group (5.0★, 11 reviews). We rank by a review-weighted score, so companies with many strong reviews rank above those with only a few.
How are the insulation installers in Worcester ranked?
We list 3 insulation companies in Worcester, ranked by Google rating weighted by review count. Together they have 269 Google reviews and average 4.9 stars, collected September 2026. Modern Energy has the most reviews (202). No company pays to be listed or ranked.
How much does insulation cost in Worcester?
Insulation prices depend on which areas you insulate (attic, walls, basement) and how much air sealing is needed. Ask each company for a price per area and the R-value you end up with, so quotes are easy to compare.
Are there rebates for insulation in Worcester?
We have no confirmed open insulation rebate for Worcester right now. Financing or future programs may still help, so check the rebate page before you sign.
Is insulation worth it in Worcester?
In Worcester, the average January low is -6°C (21°F), colder than 65% of the 123 cities we track. Sealing air leaks and topping up the attic usually pays back fastest here. Basement walls and rim joists are often the next biggest heat loss in older homes. Most rebate programs pay only after an energy assessment, and some need one before the work too. Book it first.
What should I ask an insulation installer before I hire?
Ask whether they will air-seal before insulating, and what they will seal (attic hatch, pot lights, pipes, top plates). Ask for the R-value before and after for each area, and the material and depth they will install. Ask whether your rebate needs an energy assessment before and after the work, and who books it.
Before you call anyone, check what insulation rebates you can get in Worcester. Many programs require approval or a registered contractor before work starts.
Planning more upgrades? See the top-rated heat pump installers, solar installers, home battery installers, home energy auditors in Worcester.
How to read these results
- Open the profile.How a installer describes its own work tells you a lot. Look for jobs like yours.
- Read the Google reviews.Stars and counts come from Google Maps. Click through and read what past customers wrote, good and bad.
- Check for program badges.A green registered-contractor badge means the company is on the program's own list, which some rebates require.
- Compare three.Do not stop at the first good installer. Three quotes show you the real range in price, equipment and plan.
Not ready to talk to a contractor yet?
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