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Standing pilot gas fired boiler, I have some heat in part of my home but no heat in other parts.
First things first, if you landed on this page first please follow this link back to the starting page, to read and understand the danger of working on your boiler yourself.

There are a number of things that will cause you to have heat in one or more sections of your home and no heat in other sections of your home. some homes have separate zones controlled by zone valves or a separate circulator or pump for each zone.

no_heat grundfos_circulator honeywell_zone_valves
One simple way to determine if you have a zoned system is to count your thermostats, if you have two or more heat thermostats it is likely, you have a zoned heating system. If you only have one thermostat chances are you only have one zone, but even though you only have one zone with no zone valves and only one circulator or pump, you may still only have heat in one section and no heat in another.
Now go to your basement or wherever, your boiler is located, look the boiler over carefully and follow the heat pipes, look for zone valves (see the image above) or look to see if you have more then one circulator or pump. boiler_mate

Note: many boilers have an indirect hot water maker that will have it's own zone valve and or circulator/pump, this is separate from the home heating and does not count as a heating zone, unless you do not have any hot water. Click any image to see a larger image.

Please locate your boiler gauge, it may look very different from this image but it should have both the temperature and the pressure displayed on it if the pressure is 10 PSI or more continue on this page, if the boiler is showing 0 PSI or less then 5 PSI please
click here. 
Your boiler temperature should be between 160 and 210 degrees Fahrenheit if the boiler temperature is below 100 degrees go back to the no heat at all page.
Please note: you can not always rely on the boiler gauge reading. please see stuck gauge.  If your gauge is within the above parameters, please select one of the following statements, that best describes your boiler.

 

 

 
My boiler only has one circulator/pump and does not have any zone valves at all.
My boiler has more then one zone valve and I do not have any type of indirect hot water maker.
My home has more then one circulator and I do not have any type of indirect hot water maker.
My boiler has two zone valves and one circulator, one zone valve is for an indirect hot water maker and the other is for the home heating.
My boiler has two circulators/pumps, and no zone valves and I have an indirect hot water maker.
My home has more then two zone valves with or with out an indirect hot water maker.
My home has more then two circulators and no zone valves with or with out an indirect hot water maker.
 

 

 
Note: there are so many different combinations of zone valves and circulators, it is not possible for me to cover each and every possible combination, if you need more help or your configuration is not covered in this troubleshooter, please use my open dialog service, it is well worth the fee.

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