seems like only 1 wall pic got posted... I'll try adding the other 3

It's never too late Darin. (Haven't had time to finish the gym yet :D)

Thanks for your input!

Your welcome.

Hi, Illy. I am a personal trainer and I do workout myself in my cellar and I do train a few clients there. I am not qualified in anyway as a contractor or HVAC pro.

Darin is right that optimal gym temp is around 68 to 72 degrees.

Is your space a personal gym for you?

I have a twin, so one concrete wall separates the two basements. My other walls are exterior walls. I didn’t add any insulation or framing. I painted my walls and floors. In the summer I do use a dehumidifier, set at 50% and I empty it about every two weeks.

My clients and I are comfortable year round. We may sweat a little more in the summer than in the winter. By the time we warm up in the winter, we don’t notice any chill. All-in-all, we feel it is fairly consistent.

Thanks for the feedback!

Going with insulating exterior walls to maintain a steadier temperature.

Make sure the ventilation system can monitor and reduce humidity if needed... 40-60% is a good number for basements. I live in a wet area so this is important. However if you live in the desert it might not be. I would also want a way to get some kind of fresh recirculating air every once in a while.

Glad someone revived this thread. During the coldest parts of the winter I did use a space heater that claims to measure the temp. At times it displayed 55 degrees when I switched it on. Clearly you can workout at temps besides 68 but just be aware that hypothermia and heat exhaustion onset vary with temperature changes.

Thanks again guys,

I'm planning on adding an HVAC return that will help recirculate the air, and have already installed a bathroom fan. Also, have two supply runs already. Hopefully I can easily regulate the return & supplies to modify the temperature to the correct values.

The foam is doing a great job at maintaining the temperature.

Looking good Illy Billy!