Around this part of Wyoming a pump house is used for irrigation pumps which are above ground pumps but they are shut off and drained each fall so they don't freeze. A well house would be for a well pump which is in the ground but the pressure tank is above ground. Around here it is pretty rare to see a well house due to the low temperatures we get. Instead the pressure tanks are put in the house, usually in the basement.
At a property I owned for 35 years but sold about 5 years ago I put in a well house after living there for about 20 years. The local community put in a water system that I wanted to hook up to but I wanted to also keep my well active. I buried a 6 foot diameter tank around the well casing with the casing lined up to the access hole in the top of the tank so I could pull the pump if needed. I moved the pressure tank from my basement to the well house and plumbed a hydrant to the well for watering the lawn during the summer so the well stayed active. Once the community system was in I plumbed both the well and community system so I could service the house from either one but they were kept separate from each other so I didn't get cross contamination. With the tank in the ground I didn't have to heat it and I didn't remove the snow over top of it so the snow acted as an insulator, 3 to 5 feet of snow provides a lot of insulation.
As far as your "Next problem", maybe your wife could handle the heavy and/or difficult tasks for you.