Residential HVAC Services

Greater San Jose Area

Keep your home comfortable all year around with our comprehensive, residential HVAC services including installation, maintenance, and repair for your furnace and air conditioning. Friendly service and straightforward pricing are just a few of the reasons why people prefer Keystone.


You can rely on Keystone Mechanical for all your residential heating needs. From heater repair to installation to maintenance, we do it all! When it is hot outside, you want it cool in the house. However, it is very important to have your central heating checked each year before the cooler weather sets in. Our certified and trusted technicians are courteous and reliable to assist with heating services whether in an emergency or through routine maintenance.


Your current air conditioning or heating system may be working properly; however, if the ventilation system is clogged or damaged, the indoor air quality in your home is compromised. Keystone Mechanical offers duct cleaning and repair along with ventilation services to ensure your home is safe from pollutants such as carbon monoxide and moisture. Proper air ventilation helps keep a home energy-efficient and safe. Call us today to have your home tested for air quality and proper ventilation. Our technicians are experienced in working with a variety of ventilation types.

Air Conditioning

Do you hear a strange noise or smell coming from your air conditioning system? Don’t wait for your system to shut down — call Keystone Mechanical for fast, reliable service before you experience costly repairs. Our technicians will troubleshoot, diagnose and repair all cooling issues. If you are in the market for a new air conditioning system, we can introduce you to models that feature technological advancements and are energy-efficient. Our technicians have experience installing a variety of central and ductless air conditioners. They can advise what works best in your home and within your budget. Keystone Mechanical’s technicians are trusted to maintain any type of unit and will exceed your expectations for providing for your comfort needs. Our work is 100% guaranteed.

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“Keystone is super responsive, reliable, punctual, and very competent.”
Arif A.
“Super impressed with integrity and focus on making a customer happy.”
James K.
“Quality service at competitive rates. Recommend!”
Seb L.
“Keystone deserves more than 5 stars.”
Mary T.
“Do yourself a favor and use Keystone Mechanical.”
James K.
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To Join the Team

We’re always looking for honest, trustworthy, hard working HVAC technicians to join our growing team. If you think you have what it takes, contact us today to learn more about our current job opportunities.