Here’s where you make a slight error.

they are two separate bills. 

Weekend work is emergency only and it gets billed out at double our rate . 

When replaced with a gas boiler and seperate gas hot water heater the yearly gas bill was $1,700. 

I’m still reading the fine print of this bill to see how costs are affected.

Tons of returns set this system off: errors, no income lots of expenses, disproportionate expenses, etc.When all that is done, IRS has a budget for how many returns they will put in the audit queue.

Check out the property taxes to determine if defaulted and address where bills are sent.

Meanwhile you are stuck footing the bills... 

Based on 27.5 yr straight line depreciation, that's about $1,700 of missed annual depreciation; $25,000 over 15 years - and at an ordinary tax rate of say 30% tax could amount to $7,500 off my current tax bill. 

Quote from @Kornelius Friske: We have a STR located in peoria AZ. it's 6 beds (garage conversion) and about 3900 sq ft in total. our energy bill last month was $450 and has been hovering in the $350-$450 range since we went live in august.