Blog

Do I Need to Replace My Heater?

Every winter comes with its own share of worries. Whether you’re planning on dealing with a cold, rainy days in the fall or brittle and brutal blizzards in the winter, …

How Can I Make My Home ‘Green’?

It is uplifting to see just how many people around the globe are becoming more environmentally conscious. We’re all learning to be more eco-friendly so that we can create sustainable …

Common Late Summer Heating Repairs

We all enjoy the warm days of summer and it can be hard to relinquish the warmth of the sun as the season comes to a close. In most areas …

The Age Old Debate in Choosing Your Furnace – Gas vs. Electric

Property owners always have many decisions to make, some of them quite important as they will have to live with them for as long as they own the home. This …

4 Reasons You Need to Replace Your Windows

Keep Your Energy Bills Low with a Home Energy Specialist in Solano, Napa and Contra Costa Counties, Fairfield, Vacaville, and the Bay Area. Your windows are one of the most …

Air Balance: Avoiding Hot and Cold Pockets

Ever walk into a room and feel a sudden blast of cold air? Uneven air balance not only makes the temperature in your home different from one room to the …

The Lesser-Known Benefits of Energy Efficiency

The benefits of energy conservation are numerous, and they spread beyond the immediate benefactors in its usage. Doing more with less energy benefits you, your family, your neighborhood, county, state, …

Home Improvements to Cut Down on Heat/AC Loss

Winter Tips for Making Your Home More Energy Efficient Gear up for the coldest time of the year by giving your home a winter makeover. Instead of jacking up your …

Another Happy Customer from A-1 Guaranteed

Learn About One Customer’s Experience with Going Solar Here at A-1 Guaranteed Heating & Air, Inc., one of our recent customers, Mrs. Davis of Vallejo, CA, decided to make her …

Everything You’ve Wanted to Know About Installing Solar Panels

Millions of Americans are going solar. More than just a niche interest, solar energy has become an increasingly affordable option for most homeowners. Solar panels and installation costs are dropping …

Indoor Air Cleaning Plants For A Winter Home 2

The arrival of winter doesn’t have to bring with it an end to beautiful greenery and pretty foliage; in fact, the winter is a great time to introduce some new …

Why Your Ceiling Fan Direction Matters

Ceiling fans have long been used to improve the comfort factor in buildings and homes; whether you have air conditioning or not, you need to make sure that you use …

Why Choose

A-1 Guaranteed?

Family-Owned & Operated

Highly Experienced with Nearly 30 Years in Business

Heat Pump & Home Electrification Experts

Participating Contractor with Rebate & Incentive Programs

Factory Trained Installers & Service Technicians

Drug-Free Environment Maintained & Enforced

All Employees Fully Background Checked 

Voted Best Heating & Cooling Company for 19 Years

Voted Best of the Bay by KRON 4 TV for 5 Years 

Diamond-Certified Company 

Four-Time Angie’s List Super Service Award Winner

Better Business Bureau Honor Roll for 27 Years 

Certified Green Business

North American Technician Excellent (NATE) Certified

Solano County’s Best of 2024
Golden State Rebates
GoGreen Financing
18 Years Diamond Certified
HEEHRA Rebate
Comfortably California
Hero Registered Contractor
TECH Clean California
Kasey’s Klub
SMUD Participating Contractor
2022 Daily Republic Reader’s Choice
2018 Angie’s List Super Service
2024 Nextdoor Neighborhood Favorite
Solano County’s Best of 2018
Energy Upgrade California
BPI GoldStar Contractor
Bay Area Green Business
BBB Accredited Business
EGIA Approved Contractor
KRON 4 Best of the Bay
NATE
Bryant Factory Authorized Dealer
Diamond Certified