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ContractorsRanked

Best HVAC Contractors in Williston, ND (2026)

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

The short answer

  1. 1

    Best overall in Williston: Williston heating & cooling, CR Score 63/100; 5.0★ from 75 Google reviews.

  2. 3

    Most-reviewed: Polar Refrigeration Heating, 56 Google reviews at 4.2★, the most of 11 ranked after Williston heating & cooling; ranked #3.

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

11 Williston HVAC contractors are ranked here by CR Score, from ten published factors. 3 open Saturdays, based on posted hours. The median Google rating is 5.0★ across 11 rated businesses.

Top 10 HVAC contractors in Williston at a glance

Top 10 HVAC contractors in Williston at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Williston heating & cooling635.0★ (75)Williston—Overall
2Excel Plumbing, Heating, & Cooling625.0★ (35)WillistonSat · Evenings—
3Polar Refrigeration Heating624.2★ (56)Williston—Most reviews
4Mon-Dak heating & plumbing594.7★ (33)Williston——
5Just Chillin’ Refrigeration564.5★ (13)Williston——
6Happy Homes565.0★ (4)Williston——
7Selid Plumbing & Heating Inc563.9★ (15)Williston——
8L&L Heating & Cooling LLC555.0★ (4)WillistonSat · Evenings—
9Climate Care Heating and Air, LLC555.0★ (7)Williston——
10Whitetail Heating & Cooling544.2★ (5)Lincolnton, 5 mi awaySat · Evenings—

The 11 best HVAC contractors in Williston, ranked

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

  1. Ranked #1 in Williston

    #1 Williston heating & cooling

    Based in Williston

    63/100CR Score

    Ranked #1 because of its Google rating and review volume: 5.0★ from 75 Google reviews, the most in Williston.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 75 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    15 1st Ave W, Williston, ND 58802
    View profile for Williston heating & cooling(701) 339-1529

  4. #4 Mon-Dak heating & plumbing

    Based in Williston

    59/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 33 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.7★ from 33 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    620 E Broadway, Williston, ND 58801
    View profile for Mon-Dak heating & plumbing(701) 572-3079

  6. #6 Happy Homes

    Based in Williston

    56/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.

    Based on 7 of 10 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 4 Google reviews
    View profile for Happy Homes(352) 804-4669

  7. #7 Selid Plumbing & Heating Inc

    Based in Williston

    56/100CR Score

    Ranked #7 because of its Google rating and trade focus: 3.9★ from 15 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 3.9★ from 15 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2219 2nd Ave W, Williston, ND 58801
    View profile for Selid Plumbing & Heating Inc(701) 572-5887

  11. #11 Haskin Heating and Cooling

    Based in Williston

    54/100CR Score

    Ranked #11 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    2407 2nd Ave W Suite D, Williston, ND 58801
    View profile for Haskin Heating and Cooling(701) 770-4516

Also serving Williston

2 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked HVAC contractors serving Williston
BusinessGoogle ratingDistance
Braaten Plumbing Inc4.0★ (43)In Williston
Climate Care Heating and Air, LLC5.0★ (1)In Williston

How much do HVAC contractors cost in Williston?

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

How much do HVAC contractors cost in Williston?
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 North Dakota

In North Dakota, 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 Williston HVAC contractors

We scored 11 Williston 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 Williston 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 Williston: frequently asked questions

Who is the best HVAC contractor in Williston?

By CR Score, the highest-ranked HVAC contractor in Williston, ND is Williston heating & cooling with a CR Score of 63/100. It has 5.0★ from 75 Google reviews. Excel Plumbing, Heating, & Cooling (#2) and Polar Refrigeration Heating (#3) follow. We ranked 11 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Williston?

ContractorsRanked ranks 11 HVAC contractors serving Williston, ND. 10 of them are based in Williston; the rest serve it from nearby towns. Another 2 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Williston work on weekends?

3 of 11 ranked HVAC contractors post Saturday hours. The highest-ranked open Saturdays are Excel Plumbing, Heating, & Cooling (#2), L&L Heating & Cooling LLC (#8) and Whitetail Heating & Cooling (#10). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Williston?

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 Williston. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Williston HVAC contractors have?

The median Google rating among 11 rated HVAC contractors in Williston is 5.0★, with a median of 13 reviews. Williston heating & cooling has the most, 75 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 Williston?

In North Dakota, 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.

Do HVAC contractors outside Williston count in this ranking?

Yes, if they are within 25 mi of the Williston city center, our service radius for HVAC 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 Williston

  1. October 2026: CR Scores recalculated for 11 hvac contractors serving Williston.

More HVAC contractors and Williston pages