Make sure he/she checks the following:1 - Furnace makes a "coughing noise"2 - Temperature in the house seems to be "feverishly" higher than it should be3 - The furnace fan doesn't seem to be moving/replacing the inside air as well as it should so the house doesn't seem to be "breathing" like it should. 

Temperatures this past winter caused the pipes to burst resulting to water bill around $1,500.

(Lake Shasta, Whiskeytown Lake, Sacramento River) From "Best Places: July is the hottest month for Redding with an average high temperature of 96.9°, which ranks it as warmer than most places in California.

He did most of his own maintenance and he said dealing with the boiler was a pain in the rear - from not only maintenance but constant calls from tenants unhappy with the water temperature. 

Here are the various problems: others have mentioned the ability to control the temperature and access the electrical panel 24/7 (those items just make sense).

Our homestead will likely include a main home, carriage house (guest house) with the possibility to build an additional guest houses as we hope to not only host our family and friends, but would also like to start a small bed and breakfast.What we bring to the table:- Real Estate Investing experience (I currently have 2 doors: 1 townhouse in Canada, 1 apartment in Italy)- Short-term property management experience (Canada/Italy)- Long-term property management experience (Canada)- Experience purchasing Italian real estate- Fluent in English/Italian (ability to translate)- Experience renovating using Italian building materials / systems- Trades: mechanical, welding (Him)- Successful entrepreneur.

Now, I can do a lot of things with the space, however, as it is dry, has a loading dock, is at least temperature controlled (might be climate controlled as the building has been used for document storage for a decade), and has a dry fire suppression system installed and working.

The look on our realtors faces were priceless - I had a couple blank contracts in my portfolio so we wrote it up at 4pm outside... almost freezing as the temperature is in the low 40's.  10 minutes of paperwork and the originals are at my abstract now.

I'm curious to know what's the right thing to do in this situation...I've explained to the Bottom tenant he has the luxury of controlling the temperature of the house.

I'm unfamiliar with building codes in Chicago but in Massachusetts where I do HVAC work we cannot allow the tank to be less than 120 degrees as below that temperature bacteria can grow in the tank.