Best HVAC Company in Santa Rosa and Sonoma County

Sonoma County homes face hot inland summers and damp, chilly winters, and a system that struggles through both costs you money every month. MAC Heating and Cooling Inc has been installing, repairing and replacing residential HVAC systems across Santa Rosa, Rohnert Park, Napa and Novato since 2017. You get licensed technicians, clear pricing and equipment sized for your actual home.

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(707) 684-0271

About MAC Heating and Cooling Inc

We started MAC Heating and Cooling Inc in 2017 with a simple idea. Homeowners in Sonoma County deserve an HVAC contractor who explains the work before doing it. Since then we have built our business around residential heating and cooling, including full system installations, emergency repairs, heat pumps, ductless mini splits, furnaces, custom ductwork and whole home air filtration. We take on light commercial work as well, but homes are where we spend most of our time, and that focus shows in how we size equipment, design duct runs and walk families through their options. Our service area covers Santa Rosa and the surrounding communities of Windsor, Healdsburg, Sebastopol, Cloverdale, Sonoma, Rohnert Park, Petaluma, Ukiah, Napa and Novato.

Reliable Solutions

From installation to repair, we deliver dependable and affordable HVAC solutions for homes and businesses alike, combining skilled craftsmanship with honest service to keep your space comfortable, efficient, and running smoothly all year long, every time.

Quality Heating and Cooling Delivered Right Steps

Our HVAC Services

HVAC Installation

Complete central heating and cooling systems designed around your home's square footage, layout and insulation. We handle load calculations, permits and full removal of the old equipment, so your new system runs efficiently instead of short cycling.

HVAC Repair

Fast diagnostics and repairs for systems blowing warm air, cycling on and off, making noise or refusing to start. We carry common parts on the truck, explain the failure in plain language and quote the repair before we begin.

Ductwork Design

Custom duct layouts for new builds, additions and renovations, engineered for balanced airflow from room to room. Correct sizing and routing solves the hot upstairs bedroom and the freezing back office that a bigger unit will never fix.

Ductwork Installation

Installation and replacement of residential duct systems, including sealing, insulating and testing every run. Leaky or crushed ducts waste a large share of the air you pay to heat and cool, so replacing them often improves comfort more than new equipment does.

Air Scrubbers and Filtration

Whole home air purification, UV air scrubbers and high capacity filtration installed directly into your HVAC system. These are a strong option for households dealing with allergies, pets, or the smoke and dust that arrive with North Bay wildfire season.

Heat Pump Installation

High efficiency air source and ductless heat pumps that heat and cool from a single system. They suit the mild Sonoma County climate well. Whether one lowers your running costs depends on your electricity rate and what you heat with now, so we work that out with you rather than assuming it.

Mini Split Installations

Single zone and multi zone ductless mini splits for additions, garages, ADUs, converted attics and rooms your existing system never reached. Installation is clean and quick, with no ductwork to open walls for.

Furnace Installation

Gas, natural gas and electric furnace installation and replacement, including high efficiency models. We size the unit to the home, verify venting and gas line capacity, and confirm the new furnace pairs correctly with your existing ductwork and AC.

How We Work: Three Simple Steps

When your HVAC system breaks down unexpectedly, our experienced and friendly team responds quickly with dependable repairs, restoring comfort to your home or business without unnecessary delays, extra stress, or hidden costs at all.

Call or request an estimate

Reach us at (707) 684-0271 or send your details through the website. Tell us what is happening, whether that is no heat, weak airflow, a room that never gets comfortable, or a system you know is on its last season. We will ask a few questions and get you on the schedule.

In home assessment and written quote

A technician comes out, inspects the equipment and ductwork, takes measurements where a new system is involved and explains what we found. You receive a written price covering parts, labor and timeline before you commit to anything.

Installation or repair, done right

We complete the work on the agreed date, pull any required permits, test the system with you present and clean up the site. Then we show you how to operate and maintain what we installed.

Why Sonoma County Homeowners Choose Us

Licensed technicians and nearly a decade of local experience

We have worked on North Bay homes since 2017, from 1920s bungalows in Santa Rosa to new construction in Windsor. We know the housing stock, the permit process and the local inspectors.

Written pricing before the work begins

You get a clear, itemized quote up front. There are no hourly surprises, no parts markup discovered on the invoice and no pressure to approve work while a technician waits in your hallway.

Repair first, replace when it makes sense

If your system has good years left, we say so. If you are pouring money into a unit that will fail again next season, we say that too and show you the numbers behind it.

Right sized systems instead of oversized ones

Most comfort complaints trace back to equipment that was never matched to the home. We run the load calculation and design the duct system so the equipment performs the way the manufacturer intended.

What Our Clients Say

Don't just take our word for it. Here's what real homeowners and businesses across the region have to say about their many honest experiences working with MAC Heating and Cooling Inc over the years.

MAC Heating and Cooling installed our new furnace quickly and professionally. The team was courteous, explained everything clearly, and left our home spotless. We couldn't be truly happier with the excellent service they provided.

Jerome Bell Riverside District

Our AC broke down during a brutal summer heatwave, and MAC had a friendly technician out the very same day. Fast, professional, and affordable, exactly what we truly needed at that difficult, stressful moment.

Eleanor Pena Downtown Area

The ductwork installation in our new home addition was completely seamless from start to finish. The crew was punctual, tidy, and clearly experienced and truly professional. Highly recommend their outstanding attention to every detail.

Robert Fox Oakwood Business Park

We switched to a ductless mini split system for our sunroom last summer, and MAC made the entire process simple and truly stress free. Great communication from start to finish, every step of the way.

Jerome Bell Riverside District

Our indoor air quality has improved dramatically since installing their advanced filtration system throughout our entire living room. Breathing easier really does make a huge and truly noticeable positive difference every day at home.

Eleanor Pena Downtown Area

Choosing MAC Heating and Cooling was truly one of the very best decisions we ever made for our entire home. Reliable, skilled, consistently professional, and genuinely easy to work with from the first day.

Robert Fox Oakwood Business Park

Frequently Asked Questions

How much does a new residential HVAC system cost in Sonoma County?

Most full residential system replacements in our area run between roughly $8,000 and $18,000, depending on the size of the home, the efficiency rating you choose and whether your existing ductwork can be reused. A straightforward furnace only replacement sits well below that range, while a high efficiency heat pump with new duct runs sits toward the top. We give you an exact written number after seeing the home, because square footage alone does not determine the price. One budgeting note worth knowing: the federal tax credit for this work ended after 2025, so we tell you which local rebate programmes are genuinely open when we quote.

Should I repair my old system or replace it?

Our general rule looks at age and repair cost together. If the unit is under about 10 years old and the repair is a few hundred dollars, repairing almost always makes sense. Once a system passes 15 years, uses discontinued refrigerant or needs a repair costing more than a third of a new unit, replacement usually wins on both comfort and monthly bills. We lay out both numbers and let you decide rather than pushing the bigger ticket.

Is a heat pump a good choice for the North Bay climate?

For comfort, yes. Our winters rarely drop low enough to hurt heat pump efficiency, and one system replaces both your furnace and your AC. On running cost, be wary of blanket savings promises. California electricity is expensive, so at PG&E rates a high efficiency gas furnace can still compete with a heat pump on heating cost alone. The maths turns decisively in the heat pump’s favour if you have solar, if a municipal utility serves you, or if you currently heat with electric resistance or propane. We run your actual numbers before recommending either.

How quickly can you come out for an emergency repair?

For no heat and no cooling calls in Santa Rosa, Rohnert Park, Windsor and the immediate surrounding area, we aim for same day or next morning service. Outlying areas such as Ukiah, Cloverdale and parts of Napa may take slightly longer depending on the day’s schedule. Call (707) 684-0271 and tell us it is an emergency. We prioritize households with no heat in winter and no cooling during heat waves.

Do I really need new ductwork, or just a new unit?

It depends on what your ducts are doing now. Leaky, undersized or poorly routed ductwork can waste a large portion of the conditioned air you pay for, which means a brand new high efficiency system attached to bad ducts will underperform from day one. We inspect and test the duct system during every installation estimate. Sometimes sealing and repair is enough, and sometimes a redesign is the single best investment you can make.

Is Your HVAC System Ready for the Next Season?

Whether your AC is struggling through another Santa Rosa summer or your furnace is making noises it never used to, waiting rarely makes the repair cheaper. Get an honest assessment and a written quote from a licensed local technician, with no obligation and no pressure.

Service reminders and live tracking

24/7 Customer Support Available

Respectful teams protect your home

Fully Licensed & Certified Technicians

Reach Out to Our Team

Contact our professional experts today to discuss your heating or cooling needs and discover reliable solutions for your beautiful family home.

Areas We Are Serving

Our installation crews work throughout Sonoma County and the neighboring North Bay communities, including parts of Napa, Marin and Mendocino counties. Because we are local, we can usually get out for an in home assessment within a few days and schedule most installations inside the same week. If you are weighing a replacement, an early visit costs you nothing and gives you a real number to plan around. Fixing what can be fixed is the whole point of Residential Heating and Cooling Repair. Most of that work starts with a Residential HVAC Installation sized on a proper load calculation.