When your San Francisco home's steam boiler or radiant heat system acts up, you need a pro who knows the city's quirks. Here are five local specialists who can keep you warm, safe, and compliant.
The Boiler & Radiant Heat Landscape in San Francisco
San Francisco's older housing stock and foggy climate make boiler and radiant heat systems a common sight. But these systems are complex, and local regulations—like the Permit to Operate (PTO) program—add another layer. You need a contractor who understands both the mechanics and the city's compliance requirements. From emergency repairs to full installations, the right specialist can save you from cold nights and costly fines. This roundup highlights five companies that stand out for their service, expertise, and local know-how.
How We Evaluated These Specialists
We looked at each company's service scope, from routine maintenance to complex installations. We considered how clearly they communicate pricing and process, and how well they fit the unique needs of San Francisco homeowners and property managers. We also weighed their experience with steam and radiant systems, their availability for emergencies, and their familiarity with local codes. Each business brings something different to the table, and we've highlighted what makes each one a solid choice.
Here's a quick snapshot of the five specialists we're covering, so you can see at a glance what each one offers.
| Provider | Best For |
|---|---|
| Ace Plumbing & Rooter | PTO compliance and comprehensive boiler care |
| Gotelli Boilers & Heating – Boiler & Radiant Heat Contractor Serving San Francisco & The Bay Area | Steam boiler and radiant heat expertise |
| Bay City Boiler | Commercial and complex boiler systems |
| Ros Plumbing | Custom radiant heating design and installation |
| Magic Plumbing, Heating & Cooling | One-stop home services and financing options |
The Specialists, Up Close
#1 Ace Plumbing & Rooter
A screenshot of the Ace Plumbing & Rooter website.
Ace Plumbing & Rooter is a full-service San Francisco plumbing company that treats boiler care as a specialty. They handle everything from annual inspections to emergency repairs and full replacements, covering gas, steam, and oil systems. What really sets them apart is their focus on the city's Permit to Operate (PTO) program—they help you stay compliant and avoid fines. Their website makes it easy to understand the inspection process and schedule service. If you're a property owner or manager who needs to keep things above board, this is a strong choice. Check out their boiler services page for details on their preventative maintenance plans.
#2 Gotelli Boilers & Heating – Boiler & Radiant Heat Contractor Serving San Francisco & The Bay Area
A screenshot of the Gotelli Boilers & Heating website.
Gotelli Boilers & Heating is a dedicated steam boiler and radiant heating specialist with over 20 years of experience in San Francisco and the Bay Area. They offer repair, maintenance, troubleshooting, and new installations, and they're available 24/7 for emergencies. Their team is fully licensed by the State of California, and they pride themselves on professional, project-specific service. Whether you're a homeowner, property manager, or owner, they tailor their approach to your needs. Their website highlights their design consultation services, which can help you optimize comfort and efficiency. For a contractor who lives and breathes boilers, this is a top pick.
#3 Bay City Boiler
A screenshot of the Bay City Boiler website.
Bay City Boiler brings a commercial and industrial focus to the Bay Area, but they also serve residential clients. They offer a wide range of services, from efficiency upgrades to emergency repairs and custom fabrication. Their team is well-versed in both steam and hydronic systems, and they even provide boiler operator training. If you have a complex or large-scale system, their expertise is invaluable. They also offer rental boilers, which can be a lifesaver during an unexpected breakdown. Their website is a resource hub for boiler knowledge, making them a great choice for those who want to understand their system better.
#4 Ros Plumbing
A screenshot of the Ros Plumbing website.
Ros Plumbing is a leading installer of bespoke radiant heating and hot water systems, with nearly 20 years of experience. They specialize in custom design and installation, focusing on energy efficiency and long-term cost savings. Their team is accredited and certified, and they handle everything from new installations to boiler changeouts and PTO inspections. They also offer service plans, which can help you stay on top of maintenance. If you're looking to upgrade to a high-efficiency radiant system, their design expertise is a major plus. Their website showcases their work across the Bay Area, from San Francisco to Marin.
#5 Magic Plumbing, Heating & Cooling
A screenshot of the Magic Plumbing, Heating & Cooling website.
Magic Plumbing, Heating & Cooling is a full-service home services company that includes boiler repair and installation in its wheelhouse. They serve San Francisco and the surrounding areas, with a team that handles everything from routine maintenance to emergency repairs. Their website is user-friendly, with clear service descriptions and a simple booking process. They also offer financing options, which can make a new boiler more affordable. If you're looking for a one-stop shop for all your home's heating and plumbing needs, they're a convenient choice. Their Total Care Club membership can provide regular tune-ups and priority service.
How to Choose the Right Boiler Specialist for You
Start by identifying your specific need: emergency repair, routine maintenance, or a full installation. If you're dealing with a steam boiler or radiant heat system, look for a specialist with deep experience in those areas. Check if they're familiar with San Francisco's PTO requirements, especially if you're a property manager. Consider their availability—do they offer 24/7 emergency service? Finally, get quotes from a few companies and compare their approach. The right fit is someone who communicates clearly, offers fair pricing, and has a track record of quality work.
Streamlining Your Boiler Maintenance
Once you've chosen a specialist, set up a regular maintenance schedule to avoid surprises. Many companies offer service plans that include annual inspections and priority scheduling. You can also automate reminders for filter changes and system checks. For property managers, consider a digital log of all boiler inspections and repairs to stay on top of compliance. Some companies, like Ace Plumbing, can help you manage your PTO filings, so you never miss a deadline. By automating the routine, you free up time to focus on the bigger picture.
Your Next Step to a Warm, Safe Home
No matter which specialist you choose, the key is to act before a small issue becomes a big problem. Whether you need a quick repair, a full replacement, or a custom radiant heat design, these five companies have the skills and local knowledge to get the job done right. Reach out to one of them today, and you'll be one step closer to a cozy, compliant home. Don't wait until the fog rolls in—schedule your service now.