No heat or uneven heat
The cause may involve the boiler, thermostat, controls, circulation, zone components, or another part of the system.
Boiler diagnosis and service
Boiler Repair in Boulder, CO
No heat, low pressure, water around the boiler, unusual noise, or an ignition problem can have different causes. Mesa evaluates the boiler and connected system before explaining repair or replacement options.
Licensed & InsuredEvidence-led recommendationCalls 7 AM to Midnight
Direct answer
What should you do when the boiler stops heating?
Check the thermostat setting and note any code or visible pressure reading without opening the equipment. If water is leaking or you smell gas, move away from the affected area and follow the appropriate utility or emergency guidance. A service evaluation can identify whether the issue is in the boiler, controls, circulation, or connected system.
When to evaluate
Boiler problems Mesa can evaluate
Boiler symptoms can overlap, so the equipment and heating system should be inspected before a repair is selected.
Water near the boiler
A valve, connection, pump, tank, component, or heat exchanger may be involved. Avoid touching wet electrical equipment.
Low or changing pressure
Pressure changes can point to a leak, expansion issue, gauge problem, fill component, or other system condition.
Banging, gurgling, or ignition trouble
Record when the sound occurs and any displayed code so the technician has useful diagnostic context.
Service process
Boiler service guided by diagnosis
Mesa evaluates the boiler and system behavior before recommending a component repair, further testing, or replacement path.
Describe the heating problem
Share which rooms or zones are affected, when the symptom began, and any visible code or leak.
Inspect the boiler and system
The evaluation considers the unit, controls, circulation, pressure, connections, and reported behavior.
Review the recommendation
Mesa explains the observed condition and the work that may address it.
Complete approved work
After the homeowner approves the selected path, the service can be completed and the system checked.
Choose by condition
Boiler repair, service, or replacement?
The decision depends on the failed component, equipment condition, repair history, system design, and installation requirements.
Request an EvaluationBoiler repair
May fit an isolated serviceable component, control, circulation, ignition, pressure, or connection problem.
Boiler service
May be appropriate when the system needs evaluation, cleaning, adjustment, or preventive attention rather than a replacement decision.
Boiler replacement
May deserve consideration when the equipment has a major failure, recurring problems, or a condition that makes repair impractical.
Request service
Request boiler service
Share whether the boiler has stopped heating, is leaking, shows a code, has pressure changes, or is making unusual noise. Include the service address and affected zones.
Service is preselectedProvide a phone number or emailPrefer to call? (720) 680-2303
Frequently asked
Boiler Repair questions.
Direct answers for Boulder-area homeowners comparing the next step.
Why is my boiler running but the house is not heating?
The boiler, thermostat, controls, circulation, zone components, pressure, or connected distribution system may be involved. The system needs to be evaluated to identify the cause.
What can cause low boiler pressure?
A leak, expansion issue, fill component, gauge problem, or another system condition can affect pressure. Avoid repeatedly adding water without knowing why the pressure changed.
Does a leaking boiler need replacement?
Not always. Valves, connections, pumps, tanks, components, or the boiler itself can leak. The source and condition determine whether repair or replacement deserves consideration.
Should I repair or replace my boiler?
The decision depends on the failed part, equipment condition, repair history, system design, and installation requirements. Mesa evaluates the system before explaining options.
What should I include in a boiler service request?
Share the address, affected rooms or zones, the main symptom, when it began, any displayed code or pressure reading, and whether water is present.
Start with the actual equipment condition.
Call Mesa from 7:00 AM to midnight daily or submit a service request.