Salt Lake City winters are cold enough that a heating failure is a real problem, not an inconvenience. The National Weather Service's 1991 to 2020 normals show a January mean of 31.4°F, with 27.4 days that reach a minimum of 32°F or below and 12.7 inches of snowfall for the month. A furnace or boiler that stops in that stretch can leave pipes exposed quickly. The Utah Insurance Department says frozen pipe damage may not be covered if it is due to negligence, such as failing to keep an adequate temperature in the house when you are able to. That makes it worth acting quickly and keeping a record of what you did. When you hire, remember that Salt Lake City's building permits page says no person, firm or corporation may alter the electrical, plumbing or mechanical system in a building without first obtaining the prescribed permits from the building official. Before you agree to a replacement or a larger repair, ask who pulls the permit and whether it is included in the quote.
Source: National Weather Service Salt Lake City (source, opens in a new tab)