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ContractorsRanked

Best Insulation Contractors in Princeton, NJ (2026)

96 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Princeton: Princeton Air Conditioning, CR Score 59/100; 4.7★ from 2,172 Google reviews; open 24/7.

  2. 3

    Best for emergencies (open 24/7): Randy & Bills Wildlife Control LLC, posts 24/7 hours; ranked #3 of 96.

  3. 2

    Most-reviewed: EcoShield Pest Solutions, 6,084 Google reviews at 4.8★, the most of 96 ranked; ranked #2.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

96 Princeton insulation contractors are ranked here by CR Score, from ten published factors. 11 are open 24/7, 61 open Saturdays and 21 open Sundays, based on posted hours. The median Google rating is 4.9★ across 96 rated businesses.

Most of this list also appears on the Insulation contractors in New Brunswick ranking. See Insulation contractors in New Brunswick

Top 10 insulation contractors in Princeton at a glance

Top 10 insulation contractors in Princeton at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Princeton Air Conditioning594.7★ (2,172)Princeton24/7Overall
2EcoShield Pest Solutions594.8★ (6,084)Edison, 20 mi awaySatMost reviews
3Randy & Bills Wildlife Control LLC575.0★ (76)Lakewood, 19 mi away24/7Emergencies
4Atticrawl LLC564.9★ (1,005)Woodbridge, 25 mi awaySun · Evenings—
5Brunswick Insulation Pros564.9★ (36)East Brunswick, 13 mi awaySat · Sun—
6Green Rodent Restoration LLC554.6★ (40)Edison, 19 mi away24/7—
7ThermoSpray555.0★ (23)Bayonne, 19 mi away24/7—
8Cowleys Pest Services555.0★ (334)PrincetonSat—
9Koala Insulation of Mercer & Middlesex Counties555.0★ (96)Trenton, 9 mi away——
10Gunner Insulation LLC554.9★ (117)Levittown, 16 mi awaySat—

The 96 best insulation contractors in Princeton, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  4. #4 Atticrawl LLC

    Based in Woodbridge, 25 mi away

    56/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,005 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 1,005 Google reviews
    Hours
    Mon–Thu 7 AM–7 PM · Fri 7 AM–3 PM · Sat closed · Sun 9 AM–5 PM
    Address
    34 Green St B, Woodbridge, NJ 07095
    View profile for Atticrawl LLC(800) 682-1602

  5. #5 Brunswick Insulation Pros

    Based in East Brunswick, 13 mi away

    56/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 36 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat 9 AM–6 PM · Sun 9 AM–5 PM
    Address
    12 Civic Center Dr Apt 8, East Brunswick, NJ 08816
    View profile for Brunswick Insulation Pros(908) 948-8083

  7. #7 ThermoSpray

    Based in Bayonne, 19 mi away

    55/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 23 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for ThermoSpray(609) 450-4109

  10. #10 Gunner Insulation LLC

    Based in Levittown, 16 mi away

    55/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.9★ from 117 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 117 Google reviews
    Hours
    Mon–Sat 7 AM–3 PM · Sun closed
    Address
    8595 Old Bristol Pike, Tullytown, PA 19007
    View profile for Gunner Insulation LLC(215) 801-8280

  13. #13 CleanSpaceUSA

    Based in Freehold, 22 mi away

    54/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 95 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 95 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat 7 AM–2 PM · Sun closed
    View profile for CleanSpaceUSA(856) 507-3709

  18. #18 Mammoth Solutions

    Based in Horsham, 22 mi away

    53/100CR Score

    Ranked #18 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 22 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun 10 AM–4 PM
    Address
    1615 Loretta Ave, Feasterville-Trevose, PA 19053
    View profile for Mammoth Solutions(215) 999-3006

  19. #19 NJ Home Energy Solutions

    Based in Highland Park, 16 mi away

    52/100CR Score

    Ranked #19 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 6 Google reviews
    Hours
    Mon–Sun 8 AM–8 PM
    Address
    70 Lawrence Ave, Highland Park, NJ 08904
    View profile for NJ Home Energy Solutions

  20. #20 K.M.N Insulation

    Based in Bridgewater, 19 mi away

    52/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 29 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat 7 AM–5 PM · Sun closed
    View profile for K.M.N Insulation(908) 230-4963

How much do insulation contractors cost in Princeton?

National price ranges in USD, not adjusted for Princeton. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Princeton?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked Princeton insulation contractors

We scored 96 Princeton insulation contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Princeton data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Insulation contractors in Princeton: frequently asked questions

Who is the best insulation contractor in Princeton?

By CR Score, the highest-ranked insulation contractor in Princeton, NJ is Princeton Air Conditioning with a CR Score of 59/100. It has 4.7★ from 2,172 Google reviews. It is open 24/7. EcoShield Pest Solutions (#2) and Randy & Bills Wildlife Control LLC (#3) follow. We ranked 96 insulation contractors on ten factors, last updated October 22, 2026.

How many insulation contractors are there in Princeton?

ContractorsRanked ranks 96 insulation contractors serving Princeton, NJ. 3 of them are based in Princeton; the rest serve it from nearby towns. Counts are as of October 2026.

Which insulation contractors in Princeton are open 24/7?

11 ranked insulation contractors in Princeton post 24/7 hours. The highest-ranked are Princeton Air Conditioning (#1), Randy & Bills Wildlife Control LLC (#3) and Green Rodent Restoration LLC (#6). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Princeton work on weekends?

61 of 96 ranked insulation contractors post Saturday hours and 21 post Sunday hours. The highest-ranked open Saturdays are Princeton Air Conditioning (#1), EcoShield Pest Solutions (#2) and Randy & Bills Wildlife Control LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Princeton?

Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Princeton. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Princeton insulation contractors have?

The median Google rating among 96 rated insulation contractors in Princeton is 4.9★, with a median of 10 reviews. EcoShield Pest Solutions has the most, 6,084 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank insulation contractors?

Each insulation contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside Princeton count in this ranking?

Yes, if they are within 25 mi of the Princeton city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Princeton

  1. October 2026: CR Scores recalculated for 96 insulation contractors serving Princeton.

More insulation contractors and Princeton pages

Other trades in Princeton