Keep in mind that by changing out an oil burner gun to a gas burner gun will not provide all the benefits of a modem gas boiler.Well cost is a huge factor for me right now, I'm hurting financially due to a divorce. No kids, alimony, or other encumbrances. Just a dual income home went to a single over night.
When I started this thread I was willing to pay a for a supplemental heating source too the tune of $10k (ish). Going over my finances, I've taken a second look and realized that if I can just get a gas hook-up, it will save me enough next winter to have more of budget for a system for winter 2024.
I've been researching and pricing systems out and I had a kink for wood boilers. That would be awesome! But, with a natural gas hook up, it will be cheap enough to not justify the cost of a boiler, plus I can't afford one now.
Pellet stoves are kinda cheap around $4k with install, but again, finances.
I also like the idea of a standalone source of heat in case the power goes out for a while. I know that you can use batteries, but my power was out for three days straight last winter, that sucked. Had to drain the water from the plumbing and stay at my mothers.
That experience has embolden the thought of a standalone source of heat. I've been looking at wood stoves and they are really cheap for an old ugly chunk of iron, but **** they are cheap. The real cost of the install would be lining my chimney. Growing up we had a chimney fire and the fire inspector said its not safe for any further use.
You could help the efficiency of your current boiler by adding a control that factors in outside temp. As temp outside gets colder it tells boiler to use the high limit. When it's a little warmer it essentially lowers the high limit.