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ContractorsRanked

Best HVAC Contractors in Sullivan, MO (2026)

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

The short answer

  1. 1

    Best overall in Sullivan: Juergens Heating & Cooling LLC, CR Score 64/100; 4.9★ from 308 Google reviews; open 7 days a week.

  2. 2

    Best for emergencies (open 24/7): Level 9 Heating Cooling Plumbing, posts 24/7 hours; ranked #2 of 22.

  3. 2

    Most-reviewed: Level 9 Heating Cooling Plumbing, 1,254 Google reviews at 4.9★, the most of 22 ranked; ranked #2.

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

22 Sullivan HVAC contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 10 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.9★ across 22 rated businesses.

Top 10 HVAC contractors in Sullivan at a glance

Top 10 HVAC contractors in Sullivan at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Juergens Heating & Cooling LLC644.9★ (308)SullivanSat · Sun · EveningsOverall
2Level 9 Heating Cooling Plumbing624.9★ (1,254)Washington, 24 mi away24/7Emergencies, Most reviews
3Lakebrink Heating & Air Conditioning584.7★ (99)Union, 19 mi away24/7—
4Menke Heating and Cooling575.0★ (99)Union, 20 mi away24/7—
5Comfort Zone Heating & Cooling565.0★ (28)Sullivan——
6Williams Heating & Cooling564.4★ (43)Sullivan——
7Crystal Heating & Cooling554.9★ (497)Washington, 24 mi away——
8Potter heating and cooling555.0★ (6)Union, 3 mi awaySat—
9Head's Heating & Cooling555.0★ (4)SullivanSat—
10Halmick Mechanical Heating & Air Conditioning555.0★ (11)Sullivan——

The 22 best HVAC contractors in Sullivan, ranked

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

  1. Ranked #1 in Sullivan

    #1 Juergens Heating & Cooling LLC

    Based in Sullivan

    64/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.9★ from 308 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.9★ from 308 Google reviews
    Hours
    Mon–Fri 7 AM–10 PM · Sat–Sun 8 AM–10 PM
    Address
    47 Shamrock, Sullivan, MO 63080
    View profile for Juergens Heating & Cooling LLC(573) 860-4328

  4. #4 Menke Heating and Cooling

    Based in Union, 20 mi away

    57/100CR Score

    Ranked #4 because of its Google rating and trade focus: 5.0★ from 99 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 5.0★ from 99 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    151 Oak Tree Ln, Union, MO 63084
    View profile for Menke Heating and Cooling(636) 583-5621

  6. #6 Williams Heating & Cooling

    Based in Sullivan

    56/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.4★ from 43 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 4.4★ from 43 Google reviews
    Hours
    Mon–Fri 7 AM–4 PM · Sat–Sun closed
    Address
    803 Acid Mine Rd, Sullivan, MO 63080
    View profile for Williams Heating & Cooling(573) 880-8878

  7. #7 Crystal Heating & Cooling

    Based in Washington, 24 mi away

    55/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.9★ from 497 Google reviews, listed on Google as “Furnace repair service”.

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

    • 4.9★ from 497 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    600 Washington Square Center, Washington, MO 63090
    View profile for Crystal Heating & Cooling(636) 900-9397

  9. #9 Head's Heating & Cooling

    Based in Sullivan

    55/100CR Score

    Ranked #9 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–Thu 7 AM–4 PM · Fri 7 AM–4:30 PM · Sat 7 AM–5:30 PM · Sun closed
    Address
    2501 State Hwy AF, Sullivan, MO 63080
    View profile for Head's Heating & Cooling(573) 368-6973

  11. #11 Brandt HVAC

    Based in Union, 18 mi away

    54/100CR Score

    Ranked #11 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 7 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1 E State St, Union, MO 63084
    View profile for Brandt HVAC(573) 301-1388

  14. #14 B & S Heating & Cooling

    Based in Union, 18 mi away

    54/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.7★ from 32 Google reviews, listed on Google as “Air conditioning contractor”.

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

    • 4.7★ from 32 Google reviews
    Address
    219 S Oak St #1953, Union, MO 63084
    View profile for B & S Heating & Cooling(636) 583-8404

  17. #17 Mantle Heating & Cooling

    Based in Washington, 24 mi away

    50/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.7★ from 30 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.7★ from 30 Google reviews
    Hours
    Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
    Address
    638 Parmentier Estates Dr, Washington, MO 63090
    View profile for Mantle Heating & Cooling(636) 667-1630

  18. #18 Alferman Air

    Based in Washington, 24 mi away

    50/100CR Score

    Ranked #18 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 24 Google reviews
    Hours
    Mon–Thu 7:30 AM–4 PM · Fri 7:30 AM–3:30 PM · Sat–Sun closed
    Address
    1921 Discovery Ct, Washington, MO 63090
    View profile for Alferman Air(636) 239-9595

  19. #19 FRUEH

    Based in Union, 21 mi away

    50/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.8★ from 16 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    1230 Clearview Rd, Union, MO 63084
    View profile for FRUEH(636) 583-3780

  21. #21 Freedom Heating & Cooling

    Based in Washington, 24 mi away

    43/100CR Score

    Ranked #21 because of its Google rating and trade focus: 1.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.

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

    • 1.0★ from 16 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    5475 E, MO-100 suite c, Washington, MO 63090
    View profile for Freedom Heating & Cooling(636) 900-9200

Also serving Sullivan

8 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 Sullivan
BusinessGoogle ratingDistance
64:8 Hvac & Services18 mi
Air Conditioner & Furnace Repair Derek's Heating, Cooling & Electrical LLC.19 mi
Air Services Heating & CoolingIn Sullivan
Bob's Plumbing Co5.0★ (9)In Sullivan
CHARMOR HVAC5.0★ (1)5 mi
Filla Heating and Cooling19 mi
Menke Heating and Cooling20 mi
Midwest Mechanical InsulationIn Sullivan

How much do HVAC contractors cost in Sullivan?

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

How much do HVAC contractors cost in Sullivan?
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 Missouri

HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Sullivan HVAC contractors

We scored 22 Sullivan 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 Sullivan 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 Sullivan: frequently asked questions

Who is the best HVAC contractor in Sullivan?

By CR Score, the highest-ranked HVAC contractor in Sullivan, MO is Juergens Heating & Cooling LLC with a CR Score of 64/100. It has 4.9★ from 308 Google reviews. It is open 7 days a week. Level 9 Heating Cooling Plumbing (#2) and Lakebrink Heating & Air Conditioning (#3) follow. We ranked 22 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Sullivan?

ContractorsRanked ranks 22 HVAC contractors serving Sullivan, MO. 5 of them are based in Sullivan; the rest serve it from nearby towns. Another 8 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Sullivan are open 24/7?

4 ranked HVAC contractors in Sullivan post 24/7 hours. The highest-ranked are Level 9 Heating Cooling Plumbing (#2), Lakebrink Heating & Air Conditioning (#3) and Menke Heating and Cooling (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Sullivan work on weekends?

10 of 22 ranked HVAC contractors post Saturday hours and 6 post Sunday hours. The highest-ranked open Saturdays are Juergens Heating & Cooling LLC (#1), Level 9 Heating Cooling Plumbing (#2) and Lakebrink Heating & Air Conditioning (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Sullivan?

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

What Google rating do Sullivan HVAC contractors have?

The median Google rating among 22 rated HVAC contractors in Sullivan is 4.9★, with a median of 26 reviews. Level 9 Heating Cooling Plumbing has the most, 1,254 reviews, and ranks #2. 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 Sullivan?

HVAC demand peaks in summer for cooling and in winter for heating. 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 Sullivan

  1. October 2026: CR Scores recalculated for 22 hvac contractors serving Sullivan.

More HVAC contractors and Sullivan pages