Looking to upgrade my home furnace/boiler, and looking for some alternatives that are known for being extremely high efficiency. I've heard of those gas-fired on-demand tankless hot water heaters that are really small. Is there a similar thing for an oil-fired system? What are my options. My boiler heats water year round for hot water. I do not have the big round hot water heater. The furnace/boiler does it all.
The brand is less important than the quality of the installers. Talk to friends and see if any have had this done and who they used. You can also ask the company for customer references, they should be willing to give you several. You have many options, and they vary from area to area, so you should talk to as many installers as you can to make the best decision. A good quality boiler with a faulty installation will cause you years of misery.
Weil-McLain Buderus In no particular order for oil-fired high-efficiency boilers, Accept no substitutes. There are cheaper boilers out there but there are no better ones out there. Weil-Mclain units are made in Indiana, USA. Buderus units are made in Germany. Both are state-of-the-art. We keep a Weil-McLain gas-fired boiler (Ultra 230) and we have been very happy with its performance. It replaced a boiler 50+ year old boiler of over twice the rated capacity - the house is just as warm, gets warmer faster (34 radiators), and our gas bill is roughly 1/3 of what it was.
