The first thing I want to make clear is the difference between a oil and gas furnace and an oil and gas boiler, But before I get to that, I want you to know I can help with both your oil and gas furnace problems and your boiler problems, I have over 30 years experience in the plumbing and heating field, I have installed hundreds of boilers and furnaces, and I have been servicing boilers and furnaces for the same 30 years.

So your search is over, the answer to your furnace questions and your boiler questions are within this web site.

Boilers

A boiler is a heating unit that heats water for Baseboard, radiant heat or steam radiators.
These can be fired by gas or oil. 

Furnace

A furnace is a heating unit that heats air, it has a blower and duct work to distribute the heat to the house.  
These can be fired by gas or oil.

Boiler links

Heating questions
Thermocouple
Carbon monoxide questions and answers
Residential boilers
Boiler Relief Valve
Boiler V Furnace
Boiler Questions
Burnham Boilers
Boiler expansion tank
Furnace questions
Peerless boilers
Weil McLain boilers
How to remove air from boiler
zone valves
No Heat
Heat noise
No heat in part of the house
Not enough heat
Stuck boiler gauge
No heat Whole House
Stuck relief valve
Honeywell Zone Valves
Taco Zone Valves
Modine Garage unit heaters

Furnace Links

How to replace a blower motor
Modine Garage unit heaters

For furnace questions please use either

My fee service

Plumbers-talk discussion forum