15 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Harriman: R & M Climate Control Service Experts, CR Score 63/100; 4.9★ from 2,257 Google reviews; open 24/7.
Best for emergencies (open 24/7): One Way Air, posts 24/7 hours; ranked #10 of 15.
Most-reviewed: Alta Pest Control, 1,192 Google reviews at 4.7★, the most of 15 ranked after R & M Climate Control Service Experts; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Harriman insulation contractors are ranked here by CR Score, from ten published factors. 2 are open 24/7, 7 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | R & M Climate Control Service Experts | 63 | 4.9★ (2,257) | Knoxville, 23 mi away | 24/7 | Overall |
| 2 | Alta Pest Control | 56 | 4.7★ (1,192) | Knoxville, 25 mi away | Sat | Most reviews |
| 3 | Forever Guard Crawl Space Encapsulation and Repair of Knoxville | 56 | 5.0★ (90) | Knoxville, 23 mi away | Sat · Sun · Evenings | — |
| 4 | Koala Insulation of Greater Knoxville | 54 | 5.0★ (345) | Knoxville, 25 mi away | — | — |
| 5 | AZ AIR DUCT CLEANING TN | 51 | 5.0★ (95) | Pigeon Forge, 12 mi away | Sun · Evenings | — |
| 6 | iFOAM Insulation | 51 | 4.6★ (13) | Knoxville, 23 mi away | — | — |
| 7 | Home Comfort Solutions | 50 | 4.9★ (392) | Knoxville, 24 mi away | Sat | — |
| 8 | Foam Works of East Tennessee | 49 | 5.0★ (17) | Knoxville, 25 mi away | — | — |
| 9 | 31-W Insulation | 48 | 4.1★ (39) | Loudon, 15 mi away | Sat | — |
| 10 | One Way Air | 48 | 5.0★ (22) | Knoxville, 24 mi away | 24/7 | Emergencies |
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: 4.9★ from 2,257 Google reviews, the most in Harriman.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 25 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 1,192 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 23 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 25 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 345 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pigeon Forge, 12 mi away
Ranked #5 because of its Google rating and review volume: 5.0★ from 95 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 23 mi away
Ranked #6 because of its Google rating and trade focus: 4.6★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Knoxville, 24 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 392 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 25 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loudon, 15 mi away
Ranked #9 because of its Google rating and trade focus: 4.1★ from 39 Google reviews, listed on Google as “Gutter cleaning service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 24 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 22 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Crossville, 13 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 27 Google reviews, listed on Google as “Gutter service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 25 mi away
Ranked #12 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sweetwater, 23 mi away
Ranked #13 because of its Google rating and review volume: 4.8★ from 235 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 25 mi away
Ranked #14 because of its Google rating and review volume: 4.7★ from 277 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knoxville, 24 mi away
Ranked #15 because of its Google rating and review volume: 4.8★ from 98 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
6 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.
| Business | Google rating | Distance |
|---|---|---|
| CrawlTek LLC | 4.7★ (13) | In Harriman |
| HTH Co Inc | 4.5★ (2) | 19 mi |
| J&M Construction and Insulation | 8 mi | |
| Patterson's Home Insulation | 3.0★ (2) | 24 mi |
| Tennessee Valley Waterproofing | 5.0★ (14) | In Harriman |
| Woody Brothers Construction | 4.7★ (26) | In Harriman |
National price ranges in USD, not adjusted for Harriman. 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 15 Harriman 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 Harriman 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 |