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Search results often mix boilers and water heaters, but they solve different problems. This guide helps you identify your system, understand common symptoms, and schedule the right service in the Bay Area.
Boiler vs Water Heater (the simplest explanation)
- Boiler: heats your home using hot water (hydronic heat) that circulates through radiators, baseboards, or radiant floors. Some boilers also help with domestic hot water depending on the system setup.
- Water heater: heats domestic hot water for sinks, showers, dishwashers, and laundry.
How to tell what you have in 60 seconds
- Do you have radiators/baseboards/radiant floors? That points to a boiler for home heating.
- Do you have a tank in a closet/garage? That is usually a water heater.
- Do you only have “no hot water,” but your home heat is fine? Often a water heater issue, not a boiler.
Common symptoms and what they usually mean
Boiler symptoms
- No heat in radiators/baseboards
- Boiler pressure dropping repeatedly
- Short cycling (turning on/off rapidly)
- Leaks near the boiler, relief valve, or expansion tank
Water heater symptoms
- Lukewarm or inconsistent shower temperature
- No hot water at all
- Water around the tank or at fittings
- Pilot light issues (gas) or tripped breaker (electric)
Typical Bay Area cost ranges (what affects price)
Costs depend on access, parts availability, and how urgent the situation is. As a starting point:
- Water heater repair: often $200–$800 depending on the failure
- Water heater replacement: varies widely based on tank size, venting, and code upgrades
- Heating diagnostics/repair: depends on whether it is a boiler, furnace, or heat pump and what parts are required
What to book (so the right tech shows up)
- If you have no hot water at sinks/showers, start with /services/plumbing/water-heater/water-heater-repair.
- If you have no heat from radiators/baseboards, start with /services/heating-repair.
- If you have leaking water or a suspected burst pipe, use /services/plumbing/emergency-plumbing.
Next step
If you are still unsure, call (650) 753-6015 and describe the symptom and what equipment you see (tank, radiators, or a wall unit). We will help you schedule the right visit and reduce delays.
Frequently Asked Questions
A furnace tune-up focuses on safe, efficient operation: inspection of heat exchanger and venting where accessible, burner and ignition health, airflow and filter assessment, safety controls, electrical connections visible on the appliance, and performance observations that explain whether repairs or a replacement timeline makes sense. Exact steps vary by equipment type and access; technicians document what they saw in plain language.
Most manufacturers recommend annual heating maintenance before the heavy-use season. Coastal and mild-climate homes still accumulate dust and stress ignitors and safety switches - skipping years is when small issues become mid-winter no-heat calls.
A tune-up is a single visit focused on your furnace (or broader HVAC scope if you book that way). Home Health Plans bundle scheduled maintenance across plumbing and HVAC with written condition notes and planning conversations - see sugarbearhomeservices.com/home-health-plans. Comfort Club members may receive member benefits on maintenance; ask when you call (650) 753-6015.
When diagnostics find cracked heat exchanger indicators, failed ignitors, bad flame sensors, weak inducer motors, or high CO risk, the visit shifts to documented repair options with flat-rate pricing before work proceeds - consistent with the Repair-First Promise on the No Surprises Pricing page.
Sugar Bear holds C-36 plumbing, C-20 HVAC, and C-10 electrical under CSLB #946657. If maintenance uncovers gas line concerns, condensate or humidifier plumbing issues, or electrical capacity problems at the furnace or air handler, one company can coordinate the fix instead of three separate vendors.
Yes for heat pumps and standard forced-air furnaces in our HVAC scope. If you have hydronic or boiler equipment, call (650) 753-6015 so dispatch can confirm the right technician and tools.