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24-Hour HVAC Companies in Janesville, WI — Always Available
Emergencies don't keep business hours. These hvac companies in Janesville are available 24 hours a day, 7 days a week — including holidays.
As of May 2026, RatingsNearMe ranks 20 hvac companies in Janesville, WI by verified customer ratings and review volume. The highest-rated is 24HR Home Comfort Services with a 4.9-star rating from 2,899 verified reviews. Also in the top tier: Complete Mechanical Solutions and Perfect Temp Heating & Cooling. The average rating across all listed hvac companies in Janesville is 4.8 stars from 391 reviews per business on average.
HVAC service in Janesville: $75–$150/hr for repairs; full system replacement $4,000–$12,000 depending on size and efficiency.
Rankings updated May 17, 2026 · Scored by ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
20
Businesses listed
4.8★
Avg rating
391
Avg reviews
May 17, 2026
Last updated
Top Rated HVAC Companies
24HR Home Comfort Services
310 Sunnyside Dr, Milton, WI 53563, USA
Complete Mechanical Solutions
11047 Raleigh Ct, Machesney Park, IL 61115, USA
Perfect Temp Heating & Cooling
6813 Elm Ave, Loves Park, IL 61111, USA
HVAC Companies Rankings in Janesville, WI
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | 24HR Home Comfort Services310 Sunnyside Dr, Milton, WI 53563, USA | 4.9★ | 2,899 |
| #2 | Complete Mechanical Solutions11047 Raleigh Ct, Machesney Park, IL 61115, USA | 4.6★ | 47 |
| #3 | Perfect Temp Heating & Cooling6813 Elm Ave, Loves Park, IL 61111, USA | 4.8★ | 732 |
| #4 | Gilley's Heating & Air Conditioning2707 Huffman Blvd, Rockford, IL 61103, USA | 4.6★ | 45 |
| #5 | Leading Edge Heating & Air Conditioning2364 Co Rd MM, Fitchburg, WI 53575, USA | 5.0★ | 47 |
| #6 | Breeze Heating and AC LLC1947 N Lyford Rd, Rockford, IL 61107, USA | 5.0★ | 33 |
| #7 | Absolute Value Heating & Cooling - Rockford1643 N Alpine Rd #104, Rockford, IL 61107, USA | 4.9★ | 85 |
| #8 | Aire Serv of Madison4719 Ivywood Trail, McFarland, WI 53558, USA | 4.9★ | 514 |
| #9 | Brothers HVAC, LLC1331 County Rd D, Oregon, WI 53575, USA | 5.0★ | 248 |
| #10 | Allen Heating & Cooling122 N 2nd St, Rockford, IL 61107, USA | 4.2★ | 263 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated May 2026
All HVAC Companies in Janesville
Gilley's Heating & Air Conditioning
2707 Huffman Blvd, Rockford, IL 61103, USA
Leading Edge Heating & Air Conditioning
2364 Co Rd MM, Fitchburg, WI 53575, USA
Breeze Heating and AC LLC
1947 N Lyford Rd, Rockford, IL 61107, USA
Absolute Value Heating & Cooling - Rockford
1643 N Alpine Rd #104, Rockford, IL 61107, USA
Aire Serv of Madison
4719 Ivywood Trail, McFarland, WI 53558, USA
Brothers HVAC, LLC
1331 County Rd D, Oregon, WI 53575, USA
Allen Heating & Cooling
122 N 2nd St, Rockford, IL 61107, USA
Improved Comfort Rockford HVAC & Furnace Repair Pros, Inc.
103 Hall St, Rockford, IL 61107, USA
Southport Home Services
3304 Dairy Dr, Madison, WI 53718, USA
Temperature Doctors Heating & Cooling Inc
322 7th St, Rockford, IL 61104, USA
Rockford HVAC Services
318 Vincent Ave, Rockford, IL 61102, USA
High Tech Heating & A/C, Inc.
2395 E Cottage Grove Rd, Cottage Grove, WI 53527, USA
Dream Starter HVAC Solutions Inc.
1203 22nd St, Rockford, IL 61108, USA
Fowler Heating & Air Conditioning, L.L.C.
2517 Advance Rd Unit E, Madison, WI 53718, USA
Rockford Heating & Air Conditioning
1618 Magnolia St, Rockford, IL 61104, USA
Harker Heating & Cooling
87 Nob Hill Rd, Madison, WI 53713, USA
Kerley Heating and Cooling
3762 N Farwell Bridge Rd, Rock City, IL 61070, USA
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Frequently Asked Questions — HVAC Companies in Janesville
How do I find the best hvac companies in Janesville?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked hvac companies in Janesville on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are hvac companies in Janesville licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, WI requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do hvac companies charge in Janesville, WI?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a hvac companies in Janesville?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the hvac companies on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
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How Rankings Work on This Page
Every hvac companies on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: May 17, 2026.
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