Why Choose Same Day Heating, Cooling, Plumbing?

For Jonathan Wintersteller, there isn’t one thing he’d rather be doing — or one place he’d rather be. The San Diego native had spent time in Northern California, dreaming of one day owning his own home services outfit. Now, he has that opportunity. And he gets to do it in the place he grew up in. 

“This is a sort of homecoming for my family.” he said. “I’m happy to be here. My wife is happy to be here. This is our home, and always has been.”

He brings with him lessons learned from 30+ years of experience in the home services industry — years of hard work, sweat, and late nights in the office. He comes from Santa Rosa, where he, along with Jon Diamond and Curtis Moore, helped build a regional HVAC powerhouse. In 10 years of business, the company landed on the prestigious Inc. 5000 List five times. 

The leadership team did this by bringing their personal values and beliefs of workmanship and family. They envisioned a loose, fun, but experienced and intelligent team of service technicians and representatives. It wasn’t something they always had in their previous careers as HVAC employees.

“It’s something we wanted for ourselves at other companies,” said Diamond. “A lot of companies talk about what makes them different from the competition. But we never worked for anyone that lived that. When push came to shove, they made the decision that was best for the house, not for the employee or the customer.” 

The true dedication to fostering a unique work culture that doesn’t focus simply on the transactional nature of HVAC repair and replacement, but instead looks to foster personal relationships with employees and educate customers earned Wintersteller’s company high accolades.

The business won multiple Angie’s List Super Service Awards, was a Certified 5-Star Business by Yelp and Elite Service by Home Advisor. The company was also named in the top “100 Places To Work” By the North Bay Business Journal. 

A Nationally Recognized San Diego Success Story

Founded in 2019, Same Day Heating, Cooling & Plumbing has grown from a small, family-run operation into one of San Diego’s most trusted HVAC and plumbing providers. In just six short years, we’ve earned the loyalty of thousands of local homeowners—and in 2025, our hard work and rapid growth were recognized on a national stage. Same Day made its first-ever appearance on the prestigious Inc. 5000 list of the fastest-growing private companies in America, a milestone achieved only two years after becoming eligible. This recognition follows our earlier honor on the Inc. 5000 Regionals – Pacific list in 2024.

“We want to hire for heart and want people to charge that battlefield with us,” he said. “Just do the right thing by your people and your customers. That builds momentum.”

Family-owned Same Day Heating, Cooling, Plumbing offers fast, reliable AC repair and installation services, heater repair & installation, and now plumbing services, in San Diego County. Our promise to you is always that if we do not fix your system the SAME DAY we arrive…or you DON’T pay the service fee. Our home service experts are licensed and insured with more than 100 years of leadership experience. Additionally, we back all of our installation and replacement services with a 24-month, 100% satisfaction guarantee.