Getting more hot water from my solar heater - what am I missing?

I swear, chasing drafts is like playing whack-a-mole - patch one, and another pops up somewhere else. I’ve seen tenants complain about cold floors, only to find a hidden gap behind the kitchen cabinets letting in half the neighborhood’s air. Insulating behind the tank helps, but honestly, pipe insulation and fixing those attic hatches have given me way more bang for my buck. Sometimes all the fancy upgrades don’t beat a tube of caulk and some patience...

Honestly, I’ve found that insulating the hot water pipes right from the tank to the taps makes a bigger difference than I expected. Even a cheap foam sleeve helps keep the water hotter for longer. Drafts around the tank area can really sap heat, too - worth double-checking those.

Insulating those pipes really does help, and it’s one of those things folks overlook until they see the difference on their bills. I’d just add - make sure you’re not covering up any safety valves or blocking access to shut-offs while you’re at it. I’ve seen tenants get a bit too enthusiastic with insulation and end up making a mess if there’s ever a leak. But yeah, keeping drafts out is a big deal too... sometimes even a rolled-up towel behind the tank can help if you’re in a pinch.

I’d just add - make sure you’re not covering up any safety valves or blocking access to shut-offs while you’re at it.

Yeah, I’ve seen that too - people wrap everything up and then can’t find the shut-off when there’s a problem. Had a call last winter where someone insulated right over the pressure relief valve. Not great when things go sideways. Insulation helps, but you gotta leave those spots clear. Also, if your solar heater’s not keeping up, check for air in the lines or a faulty mixing valve. Seen both kill hot water output even with good insulation.

Ever notice how easy it is to forget about the little stuff when you’re focused on getting more hot water? I’ve seen people get so caught up in adding insulation or tweaking settings that they don’t even check if the circulation pump’s actually running. Sometimes it’s just a stuck pump or a tripped breaker, and folks go down a rabbit hole looking for bigger problems.

Curious - has anyone checked the temp sensors on their solar setup? I’ve heard of those going out of calibration and throwing everything off, but it’s not always obvious unless you’re watching the readings. Also, are you using any kind of backup heater, or is it all solar? Wondering if maybe the system’s just not sized right for your usage, especially if you’ve got more people at home lately.

Just thinking out loud here... but has anyone ever had issues with sediment build-up in the tank affecting flow? I haven’t run into it much with solar, but I guess it could happen.