The best replacement for back boiler is combi.

The best alternatives to back boiler are rated as following:
★★★★★  combi
★★  stove
★★  combi boiler

Your alternative for back boiler is not listed? Suggest!
Speaking about back boiler, one probably shouldn't forget about open fire.

Other search terms related to back boiler and their ratings are:
★★★★★ open fire
★★★ wood burner
★ gas fire
★ stove
You have in mind a companion for back boiler and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of back boiler in all years. Click on graph for more.
back boiler
combi
stove