there was certainly a massive range of levels of completeness and support when we were dealing over ours. I'm really glad we went with our second option. @Kevan Marshall drop me a PM if you want an overview...
one could always try not even moving the thermostat but just turning it up a few degrees. Wherever the tank is will still track the rest of the house, even if it's a wee bit higher...
I had a makita-fit 6" chainsaw that came from the south american river shop and got a couple of years out of it till the brushes went catastrophically in the motor
replaced it wth a similar one but BL this time and it was under £30 with two batteries, a slow charger, and a spare chain...
oddly enough, the crappiest item I have is a DeWalt circular saw- Binds up mid-cut if you so much as look at it the wrong way...
conversely tho, my mate has all Parkside stuff. One of the best items he has is a cute looking wee 3.5" circular saw. Amazing thing, absolutely steams it's way through anything even at max depth of cut.