However,  around here (Ohio) courts have decided that a 'reasonable temperature' for a heat furnished apartment is 68 F. 

I believe they are more energy efficient but the downside is you can't limit the set temperature. 

Product suggestion, Zero Ice®Ice & Snow Melter• Contains magnesium, potassium, and sodium chloride• Aqua-tinted crystals—easy-to-see when applied on ice and snow• Works fast—melts to temperatures below zero degrees• Won't harm surfaces when used as directedPackaged in Neosho mo just north of you, Actually works at lower temps than rock salt.Keep up your General Liability policy.

The reason your getting more “snapping” is the lower return temperatures on the high efficiency boilers.

Situation has gotten to the point its no longer habitable to live below with noise, smoke and upstairs tenants controlling temperatures and keeping lower unit cold in winter months.

This will help you to take the temperature of the market.I just did a quick search for you in Sarasota of 3 bed properties for rent in the past 3 months and there were only 3.

Replace/add light fixtures to increase brightness or even just change out bulbs to ensure high CRI and consistent color temperature throughout the space (2700 or 3000). 

Another complained about the furnace not working when the gas had been turned off for non payment.We NEVER put smart thermostats in rental units. all we install are the old "White Rodgers" thermostats with the sliding temperature lever for that very reason.

Hello,I’m looking for a cellular monitoring system for vacant properties to get alerts if temps drop below a certain temperature.

Installing a mini-split system with high efficiency hot water heaters in a closet on each floorAdvantage: Provides both heat and AC, will permit converting ground unit into a 2BR, splits utilities for each tenantDisadvantage: Will require closet space, (potentially in a bedroom/bathroom), unsure if Mini-split system will be strong enough for the Winters where temperatures can dip below 15F occasionally. 3.