Does Tinting Windows Help with Heat During Salt Lake City Summers? — overview of key points, local considerations, and what to expect in Salt Lake City.
Understanding Summer Heat in Salt Lake City
Salt Lake City sits at an elevation of roughly 4,300 feet, which means the sun hits harder here than it does at sea level. During July and August, temperatures regularly climb past 95 degrees, and the combination of intense UV radiation and long daylight hours turns untreated glass into a radiant heat source. Business owners across downtown, Sugar House, and the Gateway District know the feeling — south-facing offices become unbearably warm by mid-afternoon, HVAC systems run nonstop, and energy bills spike. So does tinting windows help with heat in Salt Lake City? The short answer is yes, and the science behind it is well documented.
Window film works by rejecting solar energy before it passes through the glass. High-performance films block a significant percentage of total solar energy, reduce infrared radiation, and filter out UV light — all without blocking the view. When installed on commercial buildings, the result is a measurable drop in interior temperature, reduced load on air conditioning systems, and a more comfortable environment for employees and customers alike.
How Window Film Rejects Solar Heat
When property managers ask us does tinting windows help with heat in Salt Lake City, we explain that the key metric to understand is Total Solar Energy Rejected, or TSER. TSER measures the percentage of total solar energy that a film blocks from passing through the glass. The higher the TSER, the more heat the film keeps out. Infrared rejection is another important figure — IR rays are what you feel as warmth on your skin near a sunny window, and premium films can block up to 97% of that infrared energy.
For example, 3M Sun Control Prestige PR70 film offers a TSER of 50% while rejecting 97% of infrared radiation and blocking 99% of UV light. That means nearly half of the solar heat hitting the glass never makes it inside, and the near-total UV block protects furniture, flooring, and merchandise from fading. LLumar and Vista films deliver similar performance tailored to different glass types and aesthetic preferences, giving Salt Lake City businesses a range of options to match their buildings.
The Real-world Impact on Commercial Buildings
The question of whether window tinting reduces indoor temperatures is not just theoretical. Building managers throughout the Salt Lake Valley report noticeable improvements after installation. Office tenants near the University of Utah campus and retail shops along Main Street have seen afternoon temperature drops of several degrees in film-treated spaces. That translates into fewer hot-spot complaints from employees, more consistent thermostat performance, and less wear and tear on HVAC equipment.
The financial impact adds up over a single summer. When your air conditioning does not have to fight against constant solar gain through untreated glass, it cycles less frequently and uses less electricity. Over the course of a Utah summer — which can stretch from May through September — those savings can be substantial. You can learn more about the long-term value in our guide to energy efficiency improvements for commercial buildings.
Key Benefits of Heat-reducing Window Film
If you are evaluating whether film makes sense for your property, here are the core advantages that matter most for Salt Lake City businesses dealing with summer heat:
- Lower cooling costs: By rejecting up to 50% of total solar energy, window film reduces the workload on HVAC systems and cuts monthly utility bills during peak summer months.
- Improved occupant comfort: Films eliminate hot spots near windows, making offices, lobbies, and retail spaces more comfortable for employees and customers throughout the day.
- UV protection for interiors: With 99% UV block, film prevents fading of furniture, carpet, artwork, and display merchandise — extending the life of your interior investments. See our overview of UV protection window film options for more detail.
- Glare reduction: Tinted and spectrally selective films cut harsh glare on computer screens and workspaces, boosting productivity without darkening the room.
- No structural changes: Film installs directly on existing glass, so there is no need to replace windows or interrupt daily operations.
Choosing the Right Film for Your Building
Not all window films perform the same way, and the best choice depends on your building’s orientation, glass type, and priorities. Spectrally selective films like 3M Prestige are designed to reject heat while allowing high levels of visible light through — ideal for businesses that want natural daylight without the warmth. Traditional tinted films offer higher heat rejection but reduce visible light transmission, which may suit spaces where glare is a bigger concern. Our team installs films from 3M window film products as well as LLumar and Vista lines, so we can match the right product to each building’s needs.
For businesses near the Wasatch Front where afternoon sun beats down on west-facing facades, a higher-heat-rejection film may be worth the trade-off in visible light. For east-facing offices that get morning sun and shade by afternoon, a lighter spectrally selective film often hits the sweet spot. A site assessment is the best way to determine which film delivers the right balance for your specific property.
What the Department of Energy Says about Window Performance
According to the U.S. Department of Energy, windows are one of the largest sources of unwanted heat gain in commercial buildings, and improving their performance is one of the most cost-effective ways to reduce cooling loads. Window film is specifically recognized as a retrofit solution that improves the solar heat gain coefficient, or SHGC, of existing glass without requiring full window replacement. You can read more about window energy performance on the Better Buildings Solutions Center windows resources page.
A lower SHGC means less solar heat enters the building. Premium films can bring an untreated window’s SHGC down to around 0.40 or lower, depending on the product and glass combination. For Salt Lake City buildings where summer cooling dominates the energy budget, that reduction has an outsized impact on overall energy use.
Professional Installation Makes the Difference
Even the best film underperforms if it is installed incorrectly. Bubbling, peeling, and uneven edges not only look poor but can compromise the film’s heat-rejecting properties. Professional installation ensures the film adheres properly, performs as rated, and carries its full manufacturer warranty. Our installers understand the specific challenges of Utah’s climate and have experience working across a range of commercial property types — from single-story retail in Murray to multi-floor office towers downtown. Learn more about our professional installation services in Salt Lake.
The installation process is typically non-intrusive and can be scheduled around your business hours to minimize disruption. Most commercial projects are completed within a day or two, and the film begins rejecting heat immediately upon installation.
Get a Heat-reducing Window Film Quote
If you are still wondering does tinting windows help with heat in Salt Lake City, the best way to find out is to let us assess your building. We will evaluate your glass, orientation, and cooling challenges, then recommend a film that delivers measurable temperature reduction and energy savings. Every building is different, and we tailor our recommendations to your specific situation rather than offering a one-size-fits-all solution.
Our team has helped businesses across the Salt Lake Valley cut summer heat, lower energy costs, and create more comfortable spaces for employees and customers. Request a window film quote today and take the first step toward a cooler, more efficient building this summer.
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