HVAC and Solar Services Serving All of Solano, Napa & Contra Costa Counties, and the Bay Area

Our Reputation speaks for Itself

A-1 Guaranteed is a family-owned and operated business that serves HVAC and Solar Services Serving All Of Solano, Napa and Contra Costa Counties, Fairfield, Vacaville, and the Bay Area with Heating and Air Conditioning, Solar, Tankless Water Heaters, Windows, Insulation and/ or Duct Replacement needs. As one of the premier service businesses in the area, we have helped thousands of satisfied, loyal customers improve the energy efficiency of their homes and offices.

We are available Monday through Friday and by appointment on Saturday. Our fast and efficient attention to your needs will prove our dedication to our customers is the foundation of our business. Our professional staff is knowledgeable and looks after your best interests when it comes to your environmental comfort needs. We are an Energy Upgrade CA participating contractor. We are honored that our customers consider us #1 in providing trustworthy service and dependable comfort.

Why Choose

A-1 Guaranteed?

  • Voted best heating/cooling company for 16 years
  • Voted Best of The Bay for 5 years of KRON 4 TV
  • Commercial and Residential Installation
  • Angie’s List Super Service Award for 4 Years
  • Energy Upgrade Participating Contractor
  • Factory Trained Installers and Techs
  • Drug-free Environment Enforced and Maintained
  • Better Business Bureau Honor Roll 24 Years
  • Diamond Certified Company
  • North American Technician Excellence (NATE) certified
  • Bay Area Certified Green Business
  • All employees fully background checked for your safety
Recent News


What is Clean Energy?

Renewable Energy Sources Reduce Pollution and Utility Costs

Clean energy is changing the world – one industry at a time. Families, companies, cities, and states are embracing clean energy as a way of limiting the effects of climate change. Catastrophic floods, hurricanes, and wildfires brought on by drought continue to wreak havoc across California. Clean energy not only reduces these effects, it’s also considerably cheaper than non-renewable alternatives like oil, coal, and natural gas. Learn more about clean energy and how it can help you save money.

Clean Energy

Clean energy refers to sources of energy that don’t affect the environment. This may include wind, solar, hydro or geothermal energy. These are natural sources of energy that occur without human assistance. Special equipment is used to transfer this energy into electricity that most of us every day.

Fossil fuels, such as natural gas, coal, and oil, have been extracted from the planet for years, but scientists now know that burning these substances releases carbon monoxide into the atmosphere. Carbon dioxide is considered a greenhouse gas, which means it absorbs and radiates heat. The abundance of greenhouse gas is making the planet hotter. The excess heat is being absorbed into the earth and oceans, which has accelerated the growth of extreme weather events all over the world.

Clean energy offers an alternative to traditional fossil fuels that have contributed to a warming planet.

Why Use Clean Energy?

In addition to saving the planet, clean energy also makes financial sense. It’s much cheaper to generate electricity using solar panels or wind turbines that it is to extract fossil fuels from the earth, which then must be converted into fuel or electricity.

The price of solar energy equipment has dropped in price over the last few years, making it more accessible to home and business owners. The initial cost of the equipment plus installation fees varies based on the size of the property and how much energy it needs, but once the installation is complete, the owner can generate clean electricity free of charge for years to come. This equipment generally lasts between 20 and 30 years and may need to be repaired from time.

How to Use Clean Energy

If you are interested in joining the clean energy movement, now’s the time. Contact your local solar energy experts at A-1 Guaranteed to get started. We can help you install a series of solar panels on your roof or property. Once the panels are connected to the grid, you can start generating energy at home. You won’t have to pay monthly utility bills for electricity. In fact, the utility company may even pay for any excess energy you pump into the grid. You can even use this to power your all-electric vehicle to further reduce your dependence on fossil fuels.

The future is green. Clean energy is transforming industries large and small. If you’re tired of paying for fuel and electricity that contributes to climate change, take control of your energy by calling A-1 Guaranteed in Solano County. Take advantage of this opportunity today to start reaping the rewards of clean energy.

What Does All Electric Mean?

Looking to Slash Your Energy Bills? Consider Going All Electric

We all use electricity every day, but some of us depend on it more than others. As much of the world looks to renewable sources of electricity, including wind and solar, many people are choosing to go “all electric”. This term has been trending for several years as consumers and companies look to reduce their impact on the environment while cutting their utility costs. Find out what it means to go all in on clean electricity.

What is All Electric?

At its core, the term means using only electricity. This may apply to a person’s lifestyle, home, building, business, or even an entire city. As an individual, going all electric means depending solely on electricity for all of life’s needs, including housing, energy, and transportation. Some people take this to include the products they buy, including food, appliances, and even social outings.

For a business, all products and processes must rely on electricity, including manufacturing, marketing, shipping, and transportation. The term may also be applied to its suppliers and business partners.

Why Go All Electric?

The advantage of going all electric is to reduce your dependence on fossil fuels that contribute to climate change. Oil and natural gas have been around for centuries, but these methods can be costly and dangerous to the surrounding community.

Going all electric typically means relying on clean sources of renewable energy. Many people, buildings, and companies will generate their own electricity using solar panels or wind turbines. This means they are only consuming the energy they generate. It’s a form of self-reliance that can also help you lower your monthly expenses. Minus the initial cost of the equipment, you won’t have to pay for electricity. The local utility company may even pay you for any excess electricity you generate.

How to Go All Electric?

The first step is to start generating your own electricity. You’ll need to install solar panels either on your roof or near your home. A professional from A-1 Guaranteed will connect the solar panels to the grid, so you can start using the energy you generate. Everything you do in your home will rely on this electricity.

If you really want to embrace the solar lifestyle, consider using an electric bike or vehicle as well. Auto manufacturers are starting to produce all electric vehicles to reduce their carbon emissions. These vehicles have come down in price over the last few years as more people generate their own electricity. You will no longer have to depend on expensive gasoline that pollutes the environment. Let your bike or car charge overnight, so you can drive or ride to work in the morning.

No more refilling at the pump and no more expensive utility bills.

As your local Solar Energy Company in Solano and Napa Counties, the professionals at A-1 Guaranteed are here to help you go all electric. Contact us today to set up a consultation.

How to Avoid Overusing Your Air Conditioner This Summer

Reduce Your Utility Bill with These DIY Tips

Summer is in full swing, and most people are cranking up the air conditioning to full blast. With record temperatures bearing down across much of the West Coast, we could all use a little break from the heat right now. But overusing your A/C unit can lead to lasting damage or even an unexpected outage, leaving you and your loved ones in the lurch when you need to cool off.

Use these DIY tips to keep the cool air coming this summer, so you don’t have to worry about your system breaking down when you need it most.

Run the A/C in Shifts

Unless you have central heating and air conditioning, running your A/C unit 24 hours a day can get you into trouble. Some units aren’t meant to run continuously for days on end, especially if they are more than a few years old. Resist the urge the let the unit run all day long. Turn it on during the hottest hours of the day and at night when you’re trying to sleep. Try to give the machine a break during the morning and evening when it isn’t as hot.

Consider ductless Mini Splits to help cool the rooms you will be using the most.

Cover the Windows

Nothing will heat up a room like a sunny day. As much as we all love a view, be sure to close the curtains or blinds when the sun is blasting into your home. All that extra sunlight forces your HVAC system to work 10% harder, which adds to your utility bills. Try to hang out in shaded rooms during the hottest hours of the day to limit your energy usage.

Choose Your Battles

Cooling off your entire home can feel like a losing battle, especially in the middle of a record heat wave. You should only cool off the rooms you plan on occupying throughout the day. For more temperature control, try to limit your time to smaller rooms that are easier to cool than open areas. Keep doors closed to keep the cold air in and the hot air out.

Watch Out for Leaks

A leaky door or window can make it virtually impossible to keep your home cool. Go around the outside of your home to make sure cold air isn’t slipping through the cracks. Use expandable foam and sealants to close gaps and pathways. Avoid opening and closing doors and windows during the hottest hours of the day. Keep them locked during the day, so your family or housemates think twice before letting out all that cold air. Every second matters when temperatures exceed 100 degrees F.

Listen and Inspect

Your unit won’t last forever. If you’ve been using your system more than you’re used to, it could poop out at a moment’s notice. Luckily, most units give out a few warning signs before they kick the bucket. Listen for strange sounds, including grinding and clanking noises, every time you turn on the machine. Watch out for smoke, leaks, and sudden changes to your utility bill, all of which could be bad news for your unit.

You shouldn’t have to worry about staying cool this summer, at least when you’re at home. Contact the professionals at A-1 Guaranteed in Solano County if you notice anything out of the ordinary. We will schedule the most convenient time available to get your unit up and running again as quickly as possible.

What You Need to Know Before Bringing Your Team Back to the Office

Post-COVID Tips for Improving Indoor Air Quality at Work

It’s probably been a long time since you’ve seen your coworkers – at least in person, that is. The COVID-19 pandemic has changed the nature of work for millions of Americans. Many people have been working from home for the last 15 months, and companies everywhere are anxious to bring their employees back to the office. If you’re thinking of bringing your work environment back online, use this guide to make sure it’s safe for you and your employees before bringing them back onsite.

Check Your HVAC System

Many employers are letting their employees decide whether they want to get vaccinated instead of issuing a vaccine mandate. Some of your workers may be unvaccinated, so do your best to protect them and others from infection.

Unless you and your team plan on working with the windows open, your HVAC system will be your first line of defense against bacteria and germs that can lead to severe illness, including COVID-19.

Make sure your HVAC system is bringing fresh, clean air into every corner of your office or workplace, including hard to reach areas, like storage areas and back-room offices. Put your hand in front of ducts and vents and feel for cool air. Watch out for dead zones and avoid having your workers occupy spaces with poor air flow. The unit should draw in clean air from the outdoors. Make sure the unit isn’t being obstructed by trees, bushes, and other environmental debris.

The CDC says most ventilations systems should be equipped to prevent the spread of the virus, as long as they are working properly and comply with the latest indoor air quality standards.

You probably haven’t used your HVAC system in a while, so have an expert inspect your unit before bringing your workers back onsite. They can test the air quality and help you improve energy efficiency to lower your utility bills.

Install an Air Filter

For an extra layer of protection, ask the professional to replace your air filter. It’s best to replace the filter every few months to prevent dust, dirt, and other pollutants from mucking up your system.

The IWave air purifier is considered the preferred choice when it comes to preventing the spread of COVID-19. It uses patented needlepoint bipolar ionization (NPBI) to get rid of germs that can lead to infection as well as other debris that make it harder to breathe.

Talk to Your Team

You should always consider the needs of your workers before asking them to come back into the office. If someone refuses to get vaccinated or has an underlying health condition that makes them more susceptible to severe illness, they may be more comfortable working from home. A lot has changed since the world first went on lockdown in March 2020. Some workers may have moved away, while others may need to stay home to take care of an ailing family member or their children if they aren’t in school. Be sensitive to their needs to keep these individuals on your team.

The CDC also recommends regular handwashing, social distancing, regular testing, and using protective gear when working closely in person. Ask your team to stay home if they aren’t feeling well to prevent the spread of disease. Nothing will ever be exactly the same after the pandemic and getting back to the office may take some getting used to.

Contact the professionals at A-1 Guaranteed in Solano County to make sure your company’s HVAC system is up to the task at hand.

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