Utica, NY and nearby towns
Hot water boiler repair in Utica, NY
Baseboard or radiators that stay cold, a pressure gauge that climbs, or a circulator that hums but does not move water. Call to reach a local boiler company.
This is a referral line. When you call, you are connected with an independent local heating company.
How hot water heat works
A hot water (hydronic) boiler heats water and a circulator pump moves it through baseboard, radiators or radiant floor tubing. An expansion tank absorbs the extra volume as water heats, and a pressure relief valve protects the system. HomeGuide notes hot water boilers are more energy efficient and easier to control than steam.[source]
Common hot water boiler problems
- One zone cold: often a zone valve or its motor. Angi lists zone valve replacement at $200 to $500.[source]
- Whole house cold but boiler hot: often the circulator. Angi lists circulating pump replacement at $300 to $1,000.[source]
- Pressure climbing or relief valve dripping: often a waterlogged expansion tank, which Angi lists at $200 to $550.[source] See pressure problems.
- Gurgling and cold spots: air in the system.
Mid-century homes
Towns like Whitesboro, Yorkville, New Hartford have a large share of homes built in the 1940s and 1950s, where hot water baseboard heat is common.[source][source]
Parts of a hot water system
A hot water (hydronic) system has the boiler, one or more circulator pumps, an expansion tank, a pressure relief valve, a pressure reducing or fill valve that feeds water in, air vents or an air separator, and the piping out to radiators, baseboard or radiant floors. Zones are controlled either by separate circulators or by zone valves.
When something goes wrong, the symptom usually points at one of those parts. Knowing them helps you describe the problem when you call.
Reading the gauge
The combination gauge on a hot water boiler shows pressure and temperature. Residential boiler relief valves are usually set at 30 psi. If the pressure climbs near that when the boiler runs, the expansion tank may be waterlogged or the fill valve may be letting in too much water. If it reads near zero, the system may be low on water from a leak or a failed fill valve.
Write down the cold and hot readings before you call. See boiler pressure problems for more detail.
Air in the system
Air trapped in a hot water system blocks circulation. Signs include gurgling in pipes or baseboard, radiators that are hot at the bottom and cold at the top, and upper floor rooms that stay cold. Older radiators have a small bleed valve at the top that opens with a radiator key. Bleed with the boiler off and the system cool, catching water in a cup, and close the valve when water comes out steadily.
If you have to bleed often, something is letting air in or the automatic air vent has failed. A technician can find the source.
Circulators and zone valves
A circulator pump that has failed may hum, run hot, or do nothing. If the boiler is hot but the pipes leaving it to the house are cold, circulation is the problem. Zone valves can stick closed, leaving one zone cold, or stick open, leaving a zone hot when it should be off. Many zone valves have a manual lever; do not force it if it does not move easily.
Mid-century houses in Whitesboro, Yorkville, New Hartford and Oriskany have a lot of these systems. Census estimates show the 1950s as a peak decade for building in all four.[source][source][source][source]
Radiant floors and low temperature systems
Newer homes and additions sometimes use radiant floor heat, with tubing in the floor fed by a boiler through a mixing valve. These systems run at lower water temperatures and pair well with condensing boilers. If a radiant zone is cold but other zones work, the mixing valve or the zone pump is a common culprit.
Hot water boilers and freezing
NOAA's 1991 to 2020 normals for the Utica Oneida County Airport station show January averaging a high of 30 degrees and a low of 14 degrees, with about 140 nights a year at or below freezing.[source] Hot water systems have pipes full of water running through the house. If the heat is off for long in a cold snap, baseboard on outside walls and pipes in unheated spaces can freeze and split. If you expect the heat to be off for a while, call early and ask what to do to protect the system.
What to tell the company
Describe which rooms or zones are cold, the cold and hot pressure readings, whether the boiler fires, and whether the pipes leaving the boiler are hot. Mention any noises: gurgling, banging, humming from a pump. If the relief valve is dripping, say so. Those details let the technician arrive with an expansion tank, a circulator or a fill valve on the truck.
Frequently asked
How often should I bleed radiators? Only when you hear gurgling or a radiator is cold at the top. Frequent bleeding points to a problem.Low water cutoff and safety controls
Many hot water boilers have a high limit control that shuts the burner off if the water gets too hot, and some have a low water cutoff. If either trips, the boiler stops. A high limit trip can mean no circulation; a low water trip can mean a leak. Both are reasons to call rather than reset repeatedly.
Zones that stay hot
A zone that will not shut off often has a zone valve stuck open or a thermostat wire problem. Note which zone and call.
Expansion tank checks
A waterlogged expansion tank lets pressure climb as the boiler heats. Tapping it can hint at the problem, but a technician should test it.
What to have ready when you call
- Your address, so the company can tell you if you are in their area.
- Boiler type and fuel if you know it: steam or hot water, gas or oil. A sight glass with water in it usually means steam.
- What it is doing, plus any code on the display or the reading on the pressure or temperature gauge.
Not sure about any of it? Call anyway. The company will ask the right questions.
Common questions
How do I bleed a radiator?
Most have a small bleed screw. With the system cool and a towel ready, open it slowly until water comes out, then close it. If you have to do it often, call.
Is a dripping relief valve dangerous?
It is a sign the system pressure is too high or the valve is failing. Do not cap it. Call.
Can I add zones?
Often. HomeGuide lists an HVAC zoning system at $1,700 to $4,500.[source]
Talk to a local boiler pro
Call now and get connected with an independent heating company that serves the Utica area.
Call about your boiler(888) 835-0429