What does thermal imaging reveal in a home inspection?

Thermal imaging detects temperature differences that reveal hidden moisture, missing insulation, air leaks, overheated electrical connections, plumbing leaks behind walls, and HVAC ductwork problems.

Is thermal imaging included in a standard home inspection?

Basic thermal imaging scanning is often included. Comprehensive thermal imaging with detailed analysis is typically an add-on service costing $100-$200 extra and is recommended for older homes.

How accurate is thermal imaging for finding problems?

FLIR thermal cameras are highly accurate, detecting temperature differences as small as 0.1 degrees. Combined with a trained inspector, thermal imaging catches issues invisible to the naked eye.

Thermal Imaging Finds Hidden Home Problems

Published: 2026-03-06 | Home Inspector New Ulm

How Thermal Imaging Finds Hidden Problems in Minnesota Homes

A standard home inspection relies on what can be seen, touched, and measured. But the most expensive problems in Minnesota homes are often invisible: moisture behind walls, missing insulation, overheating electrical connections, and HVAC leaks. FLIR thermal imaging reveals what the naked eye cannot.

Real Problems Thermal Imaging Has Found in Southern Minnesota

Hidden Water Leak Behind a Bathroom Wall (New Ulm)

During a buyer's inspection of a 1960s ranch in New Ulm, our thermal camera revealed a significant cold spot on the bathroom wall adjacent to the shower. The wall looked perfectly normal visually, with no staining, peeling, or discoloration. The thermal image showed a wet area approximately 3 feet wide extending from the shower valve down to the floor. Investigation revealed a slow leak at the shower valve that had been saturating the wall cavity for months. Without thermal imaging, this would have gone undetected until mold growth or structural damage became visible.

Missing Insulation in a "Well-Insulated" Attic (Mankato)

A seller claimed the attic had been recently re-insulated. The visible insulation looked adequate. But our FLIR scan of the ceilings below revealed multiple areas where the insulation had been compressed, displaced, or simply never installed, particularly around recessed lighting fixtures and at the eaves. The homeowner was losing significant heat and creating conditions for ice dams. The thermal images provided clear documentation for the buyer to negotiate insulation repairs.

Overloaded Circuit in an Older Panel (St. Peter)

During an electrical panel scan on a home near Gustavus Adolphus College, our thermal camera identified one circuit breaker running 40 degrees hotter than adjacent breakers. The breaker was not tripped and showed no visible signs of distress. The hot breaker turned out to be feeding a circuit with too many loads, including a window air conditioner and a space heater on the same branch circuit. This finding prevented a potential fire hazard.

Ductwork Leak in an Unfinished Basement (Lake Crystal)

A home's heating system seemed to struggle keeping the main floor warm despite a relatively new furnace. Thermal imaging of the basement ceiling revealed heated air escaping from disconnected duct joints in three locations. The homeowner was heating the basement (and losing energy dollars) without knowing it. A $200 duct repair solved a comfort and efficiency problem.

Why Thermal Imaging Matters More in Minnesota

Our climate creates conditions that make thermal imaging exceptionally valuable:

Extreme cold - When it is -20F outside and 70F inside, thermal differences are amplified, making insulation gaps and air leaks easy to spot
Ice dams - Thermal imaging identifies the heat loss patterns that cause ice dams before the damage occurs
Moisture problems - Spring snowmelt and heavy rains drive moisture into foundations. Thermal cameras detect it inside the walls before mold develops
High energy costs - Minnesota heating costs are significant. Finding and fixing insulation and air sealing issues can save hundreds annually

What Our FLIR Inspection Includes

Complete exterior envelope scan - Every wall, window, and door junction
Room-by-room interior scan - Walls, ceilings, and floors
Electrical panel thermal analysis - Every breaker and connection
HVAC duct and register verification - Confirming heated/cooled air reaches every room
Moisture mapping - Any area showing thermal anomalies consistent with moisture
All thermal images included in your report with clear explanations

Schedule Thermal Imaging with Your Inspection

Add FLIR thermal imaging to your home inspection in New Ulm, Mankato, St. Peter, Sleepy Eye, Springfield, Nicollet, Lake Crystal, Fairmont, or anywhere in southern Minnesota.

Call (507) 205-7067 or use our instant quote calculator below.

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