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Emergency HVAC Contractors in Sterling, MA (2026)

Top 26 of 513 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 26 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Sterling: Papalia Home Services, open 24/7.

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

Top emergency HVAC contractors in Sterling at a glance

Top emergency HVAC contractors in Sterling at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Papalia Home Services654.9★ (3,978)Acton, 14 mi away24/7
2Precision Home Services644.9★ (1,017)Northborough, 10 mi away24/7
3Heritage Home Service644.9★ (2,563)Auburn, 16 mi away24/7
4DeWolfe Plumbing, Heating & Cooling644.8★ (748)West Boylston, 7 mi away24/7
5Landry Mechanical Inc Plumbing HVAC & Electric634.8★ (3,030)Millbury, 17 mi away24/7
6Control Point Heating • Cooling • Plumbing • Electric635.0★ (586)Shrewsbury, 13 mi away24/7
7CPS Heating & Cooling624.9★ (781)Grafton, 14 mi away24/7
8Gervais Mechanical Services LLC624.7★ (1,413)Auburn, 16 mi away24/7
9Wilson Brothers Heating & Air Conditioning, Inc.624.9★ (1,275)Fitchburg, 19 mi away24/7
10Nicholson Plumbing, Electrical, Heating, and Air Conditioning624.8★ (2,950)Holliston, 24 mi away24/7

Call an emergency HVAC contractor in Sterling now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 26 emergency HVAC contractors in Sterling, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 513 is on the HVAC contractors page.

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

  20. #20 Granger AC Repair

    Based in Clinton, 4 mi away

    60/100CR Score

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

    • 5.0★ from 29 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    185 High St suite 741, Clinton, MA 01510
    View profile for Granger AC Repair(978) 570-4277

Top 26 of 513 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #26, in CR Score order; each links to its profile.

HVAC contractors in Sterling, ranks 26 to 26
RankBusinessCR ScoreGoogle ratingDistance
26Landry Mechanical Inc Plumbing HVAC & Electric604.9★ (424)21 mi

How we ranked emergency HVAC contractors in Sterling

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

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 from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Sterling: questions

Which HVAC contractors in Sterling are open 24/7?

25 on this list post 24/7 hours, including Papalia Home Services, Precision Home Services, Heritage Home Service, DeWolfe Plumbing, Heating & Cooling and Landry Mechanical Inc Plumbing HVAC & Electric.

Who is ranked #1 for emergency heating and cooling in Sterling, MA?

Papalia Home Services is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Sterling ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Sterling

  1. October 2026: CR Scores recalculated for 513 hvac contractors serving Sterling.
  2. October 2026: 2 duplicate listings merged.

More emergency and heating and cooling pages