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ContractorsRanked

Best HVAC Contractors in Monroe, OH (2026)

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

The short answer

  1. 1

    Best overall in Monroe: Eco Plumbers, Electricians, and HVAC Technicians, CR Score 92/100; 4.9★ from 3,250 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Knochelmann Service Experts, posts 24/7 hours; ranked #2 of 409.

  3. 3

    Most-reviewed: Apollo Home, 15,569 Google reviews at 4.9★, the most of 409 ranked; ranked #3.

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

409 Monroe HVAC contractors are ranked here by CR Score, from 8 published factors. 158 are open 24/7, 260 open Saturdays and 208 open Sundays, based on posted hours. The median Google rating is 4.8★ across 409 rated businesses.

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

Top 10 HVAC contractors in Monroe at a glance

Top 10 HVAC contractors in Monroe at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Eco Plumbers, Electricians, and HVAC Technicians924.9★ (3,250)Beckett Ridge, 8 mi away24/7Overall
2Knochelmann Service Experts924.9★ (3,584)Sharonville, 11 mi away24/7Emergencies
3Apollo Home914.9★ (15,569)Cincinnati, 20 mi away24/7Most reviews
4Watkins Heating & Cooling914.9★ (988)Mason, 6 mi away24/7—
5HELP Plumbing, Heating, Cooling and Drains914.8★ (8,804)Cincinnati, 15 mi away24/7—
6Thomas & Galbraith Heating, Cooling, Plumbing & Electrical914.7★ (6,967)Fairfield, 10 mi away24/7—
7Arlinghaus Plumbing Heating & Air Conditioning904.9★ (1,601)Cincinnati, 11 mi away24/7—
8Extreme Heating & Air Conditioning904.9★ (550)Mason, 7 mi away24/7—
9Watkins Heating & Cooling904.9★ (1,123)Springboro, 11 mi away24/7—
10Air Authority Heating and Cooling904.9★ (439)Mason, 6 mi away24/7—

The 409 best HVAC contractors in Monroe, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  3. #3 Apollo Home

    Based in Cincinnati, 20 mi away

    91/100CR Score

    Ranked #3 because of its Google rating and review volume: 4.9★ from 15,569 Google reviews, the most Google reviews on this list (15,569).

    • 4.9★ from 15,569 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4538 Camberwell Rd, Cincinnati, OH 45209
    View profile for Apollo Home(513) 223-3957

  24. #24 Hill-Air

    Based in Fairfield, 11 mi away

    88/100CR Score

    Ranked #24 because of its Google rating and availability: 4.8★ from 546 Google reviews, open 24/7.

    • 4.8★ from 546 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3160 Cunagin Dr, Fairfield, OH 45014
    View profile for Hill-Air(513) 224-5268

HVAC contractors ranked #27 to #27

#1 to #25 are shown in full above. Here are #27 to #27, in CR Score order; each links to its profile. We publish the top 27 of 409 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Monroe, ranks 27 to 27
RankBusinessCR ScoreGoogle ratingDistance
27CJS Heating and Air884.7★ (2,108)16 mi

How much do HVAC contractors cost in Monroe?

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

How much do HVAC contractors cost in Monroe?
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

How to check an HVAC contractor's license in Ohio

In Ohio, Ohio Construction Industry Licensing Board licenses Commercial HVAC and refrigeration contractor licenses.

  1. Search the business name or license number on the Ohio Construction Industry Licensing Board license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

When to hire an HVAC contractor in Ohio

In Ohio, 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 Monroe HVAC contractors

We scored 409 Monroe HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Monroe data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

HVAC contractors in Monroe: frequently asked questions

Who is the best HVAC contractor in Monroe?

By CR Score, the highest-ranked HVAC contractor in Monroe, OH is Eco Plumbers, Electricians, and HVAC Technicians with a CR Score of 92/100. It has 4.9★ from 3,250 Google reviews. It is open 24/7. Knochelmann Service Experts (#2) and Apollo Home (#3) follow. We ranked 409 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Monroe?

ContractorsRanked ranks 409 HVAC contractors serving Monroe, OH. 1 of them is based in Monroe; the rest serve it from nearby towns. Counts are as of October 2026.

Which HVAC contractors in Monroe are open 24/7?

158 ranked HVAC contractors in Monroe post 24/7 hours. The highest-ranked are Eco Plumbers, Electricians, and HVAC Technicians (#1), Knochelmann Service Experts (#2) and Apollo Home (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Monroe work on weekends?

260 of 409 ranked HVAC contractors post Saturday hours and 208 post Sunday hours. The highest-ranked open Saturdays are Eco Plumbers, Electricians, and HVAC Technicians (#1), Knochelmann Service Experts (#2) and Apollo Home (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check an HVAC contractor's license in Ohio?

In Ohio, Ohio Construction Industry Licensing Board handles licensing and covers Commercial HVAC and refrigeration contractor licenses. Search the business or license number at https://elicense.ohio.gov/oh_verifylicense.

How much does ac replacement cost in Monroe?

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

What Google rating do Monroe HVAC contractors have?

The median Google rating among 409 rated HVAC contractors in Monroe is 4.8★, with a median of 22 reviews. Apollo Home has the most, 15,569 reviews, and ranks #3. 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 Monroe?

In Ohio, 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.

Update log for Monroe

  1. October 2026: CR Scores recalculated for 409 hvac contractors serving Monroe.
  2. October 2026: 1 duplicate listing merged.

More HVAC contractors and Monroe pages

Other trades in Monroe