93/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 153 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 153 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best HVAC Contractors in Clearlake, CA (2026)
8 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Clearlake: Right On Time Heating And Cooling™, CR Score 93/100; 4.9★ from 153 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): M.D. Heating and Air, posts 24/7 hours; ranked #3 of 8.
- 2
Most-reviewed: Jonas Energy Solutions, 934 Google reviews at 4.9★, the most of 8 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
8 Clearlake HVAC contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 5 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.9★ across 8 rated businesses.
Top 8 HVAC contractors in Clearlake at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Right On Time Heating And Cooling™ | 93 | 4.9★ (153) | Clearlake | 24/7 | Overall |
| 2 | Jonas Energy Solutions | 86 | 4.9★ (934) | Clearlake | — | Most reviews |
| 3 | M.D. Heating and Air | 85 | 5.0★ (5) | Clearlake | 24/7 | Emergencies |
| 4 | Performance Mechanical Heating & Cooling | 85 | 4.9★ (697) | Clearlake | — | — |
| 5 | Fahrenheit Heating & Air | 81 | 4.0★ (7) | Clearlake | Sat · Sun | — |
| 6 | Comfortable Living Hvac | 78 | 4.4★ (7) | Clearlake | Sat | — |
| 7 | Rose Heating And Air | 78 | 5.0★ (7) | Modesto, 7 mi away | Sat | — |
| 8 | Sonoma County Comfort Heating and Air | 76 | 5.0★ (9) | Larkfield-Wikiup, 22 mi away | — | — |
The 8 best HVAC contractors in Clearlake, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Based in Clearlake
86/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 934 Google reviews, the most Google reviews on this list (934).
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 934 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 9125 CA-53, Lower Lake, CA 95457
Based in Clearlake
85/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Clearlake
85/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 697 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 697 Google reviews
- Hours
- Mon–Fri 7 AM–3:30 PM · Sat–Sun closed
- Address
- 14729 Lakeshore Dr, Clearlake, CA 95422
Based in Clearlake
81/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.0★ from 7 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.0★ from 7 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 14350 Lakeshore Dr, Clearlake, CA 95422
Based in Clearlake
78/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.4★ from 7 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–12 PM · Sun closed
- Address
- 14963 Lakeshore Dr, Clearlake, CA 95422
Based in Modesto, 7 mi away
78/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
Based in Larkfield-Wikiup, 22 mi away
76/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
- 5.0★ from 9 Google reviews
How much do HVAC contractors cost in Clearlake?
National price ranges in USD, not adjusted for Clearlake. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
How to check an HVAC contractor's license in California
In California, Contractors State License Board (CSLB) licenses C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- Check that the status is active and the name matches the contract or truck.
- 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 California
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
How we ranked Clearlake HVAC contractors
We scored 8 Clearlake 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.
| Factor | Weight | Computed from | In Clearlake data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
HVAC contractors in Clearlake: frequently asked questions
Who is the best HVAC contractor in Clearlake?
By CR Score, the highest-ranked HVAC contractor in Clearlake, CA is Right On Time Heating And Cooling™ with a CR Score of 93/100. It has 4.9★ from 153 Google reviews. It is open 24/7. Jonas Energy Solutions (#2) and M.D. Heating and Air (#3) follow. We ranked 8 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Clearlake?
ContractorsRanked ranks 8 HVAC contractors serving Clearlake, CA. 6 of them are based in Clearlake; the rest serve it from nearby towns. Counts are as of October 2026.
Which HVAC contractors in Clearlake are open 24/7?
2 ranked HVAC contractors in Clearlake post 24/7 hours. The highest-ranked are Right On Time Heating And Cooling™ (#1) and M.D. Heating and Air (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Clearlake work on weekends?
5 of 8 ranked HVAC contractors post Saturday hours and 3 post Sunday hours. The highest-ranked open Saturdays are Right On Time Heating And Cooling™ (#1), M.D. Heating and Air (#3) and Fahrenheit Heating & Air (#5). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an HVAC contractor's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does ac replacement cost in Clearlake?
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 Clearlake. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Clearlake HVAC contractors have?
The median Google rating among 8 rated HVAC contractors in Clearlake is 4.9★, with a median of 8 reviews. Jonas Energy Solutions has the most, 934 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 Clearlake?
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
Update log for Clearlake
- October 2026: CR Scores recalculated for 8 hvac contractors serving Clearlake.
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