70
StrongSunnyvale, California · Heating & furnaces
Heating & furnace contractors in Sunnyvale, CA
8 heating & furnace contractors in Sunnyvale, out of 15 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.
- Pros
- 8
- Avg. score
- 43.3
- Scored
- 8
Summary
Data last updatedAs of October 14, 2026, the ProComfort Registry lists 8 heating & furnace contractors in Sunnyvale, California. Most-listed specialties: air conditioning (8), commercial (1). 8 have enough public signals for a Registry Score, averaging 43.3 out of 100; 2 score 70 or higher. Together they hold 737 public reviews on Google, Yelp and Facebook. The highest-scored is Same Day Air Conditioning & Heating, at 78 out of 100. 4 are Featured for 2026. View Same Day Air Conditioning & Heating.
Counts come straight from the Registry's records. How the Registry Score works
Featured heating & furnace contractors in Sunnyvale
57
Established48
Developing30
DevelopingShowing 1–8 of 8
78
StrongSunnyvale, CA 94086 4.7(673 reviews)
HVACHeatingA/C
70
Strong57
EstablishedSunnyvale, CA 94086 4.3(4 reviews)
HVACHeatingA/C
48
DevelopingSunnyvale, CA 94089 4.5(8 reviews)
HVACHeatingA/CCommercial
30
Developing27
Developing22
Developing14
DevelopingHeating & furnace contractors in Sunnyvale: at a glance
- How many heating & furnace contractors are in Sunnyvale, California?
- As of October 14, 2026, the ProComfort Registry lists 8 heating & furnace contractors in Sunnyvale, California.
- Who is the highest-scored heating contractor in Sunnyvale, California?
- By Registry Score, Same Day Air Conditioning & Heating (Sunnyvale, CA) ranks first at 78 out of 100, among 8 scored businesses averaging 43.3. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
- Which companies are featured in Sunnyvale, California for 2026?
- ProComfort Registry features Grumpy's HVAC, Convectek Heating and Cooling, RTD Mechanical, Balcom Heating & Air. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.
- How are heating & furnace contractors in Sunnyvale, California ranked?
- By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.
What this list includes: businesses whose public category or name points to heating: furnaces, boilers, heat pumps or radiant heat. Tags come from each business's public category and name, so a company can appear under several trades. Heating & furnace contractors across the US