83 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in King of Prussia: EcoShield Pest Solutions, CR Score 62/100; 4.8★ from 10,503 Google reviews.
Best for emergencies (open 24/7): Proper Roofing, posts 24/7 hours; ranked #13 of 83.
Most-reviewed: Power Home Remodeling, 3,363 Google reviews at 4.4★, the most of 83 ranked after EcoShield Pest Solutions; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 King of Prussia insulation contractors are ranked here by CR Score, from ten published factors. 6 are open 24/7, 38 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.9★ across 83 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | EcoShield Pest Solutions | 62 | 4.8★ (10,503) | Norristown, 2 mi away | — | Overall |
| 2 | Koala Insulation of Chester County | 58 | 4.9★ (231) | Chester Springs, 13 mi away | Sat · Sun | — |
| 3 | USA Insulation of Philadelphia | 54 | 4.5★ (154) | Conshohocken, 5 mi away | — | — |
| 4 | Spray Foam Pros of Philadelphia | 54 | 4.8★ (33) | Darby, 16 mi away | Sat · Sun | — |
| 5 | Alligood Energy | 54 | 4.9★ (44) | Philadelphia, 12 mi away | Sat | — |
| 6 | Home Energy and Comfort | 54 | 5.0★ (18) | King of Prussia | — | — |
| 7 | Critter Guard | 54 | 4.7★ (92) | Bellmawr, 21 mi away | Sat · Sun · Evenings | — |
| 8 | AGL Spray Foam | 54 | 4.9★ (60) | Sharon Hill, 15 mi away | Sat · Evenings | — |
| 9 | Koala Insulation of Doylestown | 54 | 4.9★ (221) | Kulpsville, 15 mi away | — | — |
| 10 | Riley Sales Inc | 54 | 4.3★ (35) | Plymouth Meeting, 5 mi away | Sat | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.8★ from 10,503 Google reviews, the most in King of Prussia.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester Springs, 13 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 231 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Conshohocken, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.5★ from 154 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Darby, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Philadelphia, 12 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in King of Prussia
Ranked #6 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bellmawr, 21 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 92 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sharon Hill, 15 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 60 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kulpsville, 15 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 221 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Plymouth Meeting, 5 mi away
Ranked #10 because of its Google rating and trade focus: 4.3★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Chester, 12 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lansdale, 12 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Camden, 15 mi away
Ranked #13 because of its Google rating and review volume: 5.0★ from 140 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Horsham, 21 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ardmore, 10 mi away
Ranked #15 because of its Google rating and trade focus: 3.5★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wilmington, 16 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Philadelphia, 17 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Blue Bell, 11 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Trenton, 16 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Doylestown, 21 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 182 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Philadelphia, 16 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Chester, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.1★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Willow Grove, 15 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Drexel Hill, 18 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Philadelphia, 17 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 83 ranked insulation contractors here; the rest are on their profiles.
20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
National price ranges in USD, not adjusted for King of Prussia. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
We scored 83 King of Prussia 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.
| Factor | Weight | Computed from | In King of Prussia data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |