Skip to content
ContractorsRanked

Best HVAC Contractors in Chester, NH (2026)

526 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Chester: Heritage Home Service, CR Score 66/100; 4.8★ from 7,956 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Patriot Oil Burner Service, posts 24/7 hours; ranked #2 of 526.

  3. 15

    Most-reviewed: MillTown Plumbing, Heating, Cooling and Electrical, 2,927 Google reviews at 4.8★, the most of 526 ranked after Heritage Home Service; ranked #15.

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

526 Chester HVAC contractors are ranked here by CR Score, from ten published factors. 144 are open 24/7, 245 open Saturdays and 180 open Sundays, based on posted hours. The median Google rating is 4.9★ across 526 rated businesses.

Most of this list also appears on the HVAC contractors in Manchester ranking. See HVAC contractors in Manchester

Top 10 HVAC contractors in Chester at a glance

Top 10 HVAC contractors in Chester at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Heritage Home Service664.8★ (7,956)Auburn, 5 mi away24/7Overall
2Patriot Oil Burner Service645.0★ (263)Chester24/7Emergencies
3High Ground Service Pros - Plumbers Electricians & HVAC Technicians644.9★ (2,303)Manchester, 11 mi away24/7—
4HeatPro HVAC624.8★ (138)Chester24/7—
5Southern New Hampshire Plumbing and Heating624.8★ (433)Londonderry, 6 mi away24/7—
6LHR Plumbing Heating Cooling and Electric624.9★ (454)Manchester, 10 mi away24/7—
7A.J. LeBlanc Heating, A/C, Plumbing & Electrical614.8★ (683)Bedford, 11 mi away24/7—
8Bill Trombly Plumbing - Heating - Cooling - Electric614.7★ (598)Manchester, 10 mi away24/7—
9Brookside Heating & Cooling (fka Brookside Mechanical, Inc.)614.9★ (167)Manchester, 7 mi away24/7—
10Heritage Home Service614.9★ (2,248)Hampton, 22 mi away24/7—

The 526 best HVAC contractors in Chester, 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 HeatPro HVAC

    Based in Chester

    62/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.8★ from 138 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 138 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for HeatPro HVAC(603) 923-3103

  10. #10 Heritage Home Service

    Based in Hampton, 22 mi away

    61/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.9★ from 2,248 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 2,248 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    179 Lafayette Rd, North Hampton, NH 03862
    View profile for Heritage Home Service(603) 370-5097

  21. #21 Pilot Plumbing, Heating and Cooling | Plumber, Tankless Water Heater Repair & Installation | Heating & AC Repair Sandown, NH

    Based in Sandown, 5 mi away

    60/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 51 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    265 Fremont Rd, Sandown, NH 03873
    View profile for Pilot Plumbing, Heating and Cooling | Plumber, Tankless Water Heater Repair & Installation | Heating & AC Repair Sandown, NH(603) 634-8531

  25. #25 MVP Home Services

    Based in Haverhill, 16 mi away

    59/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.7★ from 545 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 545 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    72 S Kimball St, Haverhill, MA 01835
    View profile for MVP Home Services(978) 228-1904

HVAC contractors ranked #26 to #26

#1 to #25 are shown in full above. Here are #26 to #26, in CR Score order; each links to its profile. We publish the top 26 of 526 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Chester, ranks 26 to 26
RankBusinessCR ScoreGoogle ratingDistance
26Patriot Heating & Cooling, LLC594.8★ (174)In Chester

How much do HVAC contractors cost in Chester?

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

How much do HVAC contractors cost in Chester?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

When to hire an HVAC contractor in New Hampshire

In New Hampshire, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Chester HVAC contractors

We scored 526 Chester HVAC 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 Chester 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

HVAC contractors in Chester: frequently asked questions

Who is the best HVAC contractor in Chester?

By CR Score, the highest-ranked HVAC contractor in Chester, NH is Heritage Home Service with a CR Score of 66/100. It has 4.8★ from 7,956 Google reviews. It is open 24/7. Patriot Oil Burner Service (#2) and High Ground Service Pros - Plumbers Electricians & HVAC Technicians (#3) follow. We ranked 526 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Chester?

ContractorsRanked ranks 526 HVAC contractors serving Chester, NH. 4 of them are based in Chester; the rest serve it from nearby towns. Counts are as of October 2026.

Which HVAC contractors in Chester are open 24/7?

144 ranked HVAC contractors in Chester post 24/7 hours. The highest-ranked are Heritage Home Service (#1), Patriot Oil Burner Service (#2) and High Ground Service Pros - Plumbers Electricians & HVAC Technicians (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Chester work on weekends?

245 of 526 ranked HVAC contractors post Saturday hours and 180 post Sunday hours. The highest-ranked open Saturdays are Heritage Home Service (#1), Patriot Oil Burner Service (#2) and High Ground Service Pros - Plumbers Electricians & HVAC Technicians (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Chester?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Chester. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Chester HVAC contractors have?

The median Google rating among 526 rated HVAC contractors in Chester is 4.9★, with a median of 18 reviews. Heritage Home Service has the most, 7,956 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Chester?

In New Hampshire, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How does ContractorsRanked rank HVAC contractors?

Each HVAC 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.

Update log for Chester

  1. October 2026: CR Scores recalculated for 526 hvac contractors serving Chester.
  2. October 2026: 9 duplicate listings merged.

More HVAC contractors and Chester pages

Other trades in Chester