Rohnert Park—The Friendly City

A Historic Blend with an Upbeat Vibe

The friendly city of Rohnert Park is located some 50 miles north of San Francisco in Sonoma County. The town is named after the family that owned the Rohnert Seed Farm. Rohnert Park is the sister city to Hashimoto, Japan.

While the service area for Ongaro and Sons doesn’t extend to Japan, as a family owned business in operation since 1932 we honor our customers in Rohnert Park with a similar respect for tradition of service and loyalty. We ensure your home comfort needs and 100 percent satisfaction by providing the very best plumbing, boiler, heating and cooling services to our customers in the Rohnert Park area.

Mid-Century Growth Spurt

Back in the 1950s, the town population consisted of four adults. That all changed with the completion of the US Route 1 Freeway. Rohnert Park was laid out as a planned city and was incorporated in 1962—the first town since 1905 to incorporate in Sonoma County. Today, according to the last census, over 42,000 reside in Rohnert Park.

Many of these residents rely on Ongaro and Sons for their plumbing, heating and cooling expertise. We’ve grown with them over the years, and are growing still.


Whether your thing is golfing, hiking, touring Armstrong Redwoods State Natural Reserve or relaxing by the water (Bodega Bay is particularly famous as the site where Alfred Hitchcock filmed the classic horror/fantasy film, The Birds), Rohnert Bay provides the ideal climate for outdoor recreational activities.

When you’re not outside enjoying the ideal climate, Ongaro and Sons has your  indoor air quality covered. You can’t control the weather outside. But Ongaro and Sons can help you control temperatures inside with our residential and commercial heating and cooling services that ensure you are always comfortable, no matter what the weather.

There’s another thing we can help you control. Seasonal allergies. One thing decidedly not enjoyable about being outside is seasonal allergies. At best it’s annoying to have to endure a runny nose or headache. At worst, it’s not healthy for people who have respiratory issues.

While we can’t help you entirely eliminate seasonal allergies (hey, we’re plumbers and HVAC specialists, not miracle workers), there are some things we can do to help you relieve some seasonal allergy symptoms. Here’s a set of tips to make breathing easier.


If you’re looking for some speedier entertainment, Sonoma Raceway is just the ticket. Check out the Wednesday night drag races or the Sonoma Drift where both amateurs and professionals can practice their drifting skills on a specially designed course—drivers are judged on style and execution rather than who finishes the fastest.

Our customers judge Ongaro and Sons based on our ability to perform exactly what we quote for a job, at the price we quote. Backed by a 100 percent customer satisfaction guarantee.

Rohnert Park Has Game

If you are looking to try your luck at various gaming tables, enjoy fine dining and experience world-class entertainment, the Graton Resort and Casino has it all.

Here’s one thing you don’t want to gamble on though—the efficient operation of your plumbing, heating and cooling systems in your home or commercial business. You can bet on Ongaro and Sons to provide experienced, licensed technicians who can perform all the needed services to ensure smooth operation without any surprises or hidden costs.

How’s the Weather? Mighty Fine, Mighty Fine

The Rohnert Park Chamber of Commerce boasts that, “Warm days and cool nights characterize Sonoma County’s climate, but each city seems to have its own micro-climate with small variations in temperatures. Cool, moist marine air from the ocean moderates temperatures, while the low range of western coastal hills provides protection from the effects of Pacific storms.”

But even during the best weather conditions, Rohnert Park residents still require reliable heating and cooling systems. And, of course, plumbing maintenance is always essential, regardless of what’s going on outside.

Water Conservation

California experiences periodic droughts, and Rohnert Park is no exception. According to the city public works department, “Our region just experienced the third driest water year on record over the last 127 years. As of June 21st, 2021, Lake Sonoma storage is at 54 percent of water supply capacity and Lake Mendocino is at 37 percent. Sonoma Water and the City of Rohnert Park are continuously monitoring the water supply conditions…Although we encourage all water customers to implement everyday water saving practices both inside and outside your home or business as a way of life, we are asking customers to do MORE to reduce water-use due to the present drought conditions.”

Rohnert Park residents should be aware how leaky faucets and toilets contribute to significant water waste. Thorough inspection of plumbing fixtures and pipes ensures water is being distributed in the most efficient and least wasteful manner.

When Smoke Gets in Your Eyes

California has experienced a tremendous increase in wildfires and resulting smoke pollution. In fact, Rohnert Park has had to evacuate on several occasions due to raging wildfires threatening lives and property.

Even when it is considered safe to stay home, high levels of smoke particulates from nearby wildfires irritate the nose and lungs and can cause serious health problems. When outside air in Rohnert Park is smoky and potentially dangerous, Ongaro and Sons has the products you need to breathe easier indoors.

Ongaro & Sons Services Rohnert Park

Rohnert Park residents can depend on Ongaro and Sons for their plumbing and heating and cooling services, fully confident they’ll receive quality workmanship and incomparable service.  Our experienced and licensed technicians make sure your heating, cooling and plumbing systems operate efficiently and economically.


Ongaro and Sons provides a variety of residential plumbing services. These include inspection, installation and repair. Our technicians are also experienced with drain cleaning maintenance and repair, including installation and repair of garbage disposals. We  carefully and thoroughly explore your plumbing, using drain line cameras when necessary, so that we can identify any problems and fix exactly what is wrong.


Ongaro and Sons technicians are trained for all residential makes and models of forced air and air conditioning repair. We design customized Heating Ventilation Air Conditioning (HVAC) systems using a diagnostics approach that provides the highest levels of efficiency and comfort. Our trucks are fully stocked with replacement parts for most required repairs; on the off chance we don’t have a part on hand, we get the part as quickly as possible so that you’ll be up and running in a very short time.

Boiler Repair

Ongaro and Sons technicians are highly trained in boiler repair and regularly attend boiler manufacturer’s training courses. They use the latest diagnostic equipment and techniques to determine a problem quickly and get you back up and running as soon as possible. We work on most major manufacturer models.

Regular boiler system maintenance and annual tune-up ensure longer lasting equipment and lower utility bills. If your boiler needs replacement, we carry most major brands.

Duct Cleaning, Repair and Replacement

Central air conditioning and heating are the top energy consumers in most California homes. Which is why ensuring the efficiency of your residential or commercial HVAC system is a top priority of Ongaro and Sons.

When most people think about saving energy, they usually think about getting energy-efficient furnace and air conditioner units. Equally important, however, is the duct system. A leaky duct system can reduce your climate control system’s efficiency as much as 20 to 30 percent. These leaks also bring unwanted dust, unconditioned outdoor air and humidity into your living space and take money straight out of your wallet.

If your home is over seven years old, have your ducts professionally tested by one of our certified Home Energy Rating System (HERS) technicians as part of a whole-house  energy audit. If leaks are detected, we can do a thorough and effective cleaning, conduct repairs or, if needed, replace leaky ductwork.

Indoor Air Quality

Ventilation is the process of bringing fresh air into your home to replace stale air filled with indoor pollutants such as cooking smells, pet odors and/or tobacco. Proper ventilation is not only key to the efficiency of your home heating and cooling system, but to your indoor air quality, which directly affects you and your family’s health.

While air filters and air fresheners remove particles from circulating, they don’t bring in fresh air. One simple way to correct this is to open doors and windows, but this is not always practical. It also allows outside allergens and pollutants into the house.

Ongaro and Sons offers a number of solutions to increase the quality of your indoor air, including everything from a filtration system to a complete home purification system and fresh air exchange system.

We’re a family-owned business that understands the importance of protecting your health and the health of your family. Proper ventilation is a good way to help accomplish that. Which is why we like to say Ongaro and Sons put the “V” back into HVAC, so your family can breathe a sigh of relief.

Contact Us

Ongaro and Sons is here for Rohnert Park residents as well as commercial businesses to provide full-service heating and cooling, plumbing and boiler installation, maintenance and repair. Contact us. We’re happy to answer your questions and discuss your needs.