Boiler Not Heating
Boiler running but no heat, or boiler won't fire? Common causes in steam and hot-water systems and when to call a licensed boiler technician.
What boiler repair covers
Steam, hot-water and combi boiler repair, connected to licensed hydronic technicians across the United States.
Every service page explains the problem in plain terms, lists safe checks, and shows what a licensed technician tests. If you already know you need help, call (888) 555-0144.
Service guides
Boiler Pressure Problems
Boiler pressure dropping, climbing above 25 PSI or relief valve dripping? What normal pressure is and how expansion tanks and fill valves cause problems.
Leaking Boiler Repair
Water under the boiler? Relief valve, pump seal, fittings or a cracked heat exchanger. How to tell where a boiler leak comes from and what to do.
Steam Boiler Repair
Steam heat banging, radiators cold or boiler shutting off on low water? Steam boiler repair explained by system part, for older US homes and buildings.
Radiator & Baseboard Not Heating
One radiator cold, cold at the top, or baseboard heat not working in one room? Bleeding, balancing, zone valves and when to call a technician.
Costs and coverage
See the cost guide for what changes the price, the FAQ for quick answers, and the coverage map for your state.