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Temporary Heat on Construction Sites

Sun, 21 Sep 2025 16:57:38 GMT

Temporary Heat on Construction Job Sites: Why It Matters and How to Do It Right

When winter weather hits, construction projects don’t just stop. Deadlines remain, crews need to keep working, and building materials must be protected. That’s where temporary heat on construction job sites comes in. From ensuring worker safety to preventing costly delays, temporary heating solutions are essential for keeping projects on track during cold weather.

Why Temporary Heat Is Essential

Worker Comfort & Safety
Cold temperatures create unsafe and unproductive conditions. OSHA requires that employers protect workers from extreme weather, and providing heated work environments reduces the risk of cold-related illnesses such as hypothermia and frostbite. Comfortable workers are also more efficient and focused.

Material Protection
Many building materials, including drywall, concrete, paint, adhesives, and flooring, need certain temperature ranges to cure or install correctly. Without proper heating, materials can fail, leading to rework, wasted time, and added costs.
Maintaining Project Timelines
Freezing temperatures can halt certain construction activities altogether, like concrete pouring or finish work. Temporary heat keeps schedules moving forward instead of stalling during the winter season.
Humidity & Moisture Control
Temporary heaters often work alongside dehumidifiers to maintain proper indoor conditions. This prevents condensation, mold growth, and moisture damage that can compromise both materials and air quality.

Types of Temporary Heating Solutions

Different jobs require different heating solutions. Common options include:

Indirect-Fired Heaters
These heaters deliver clean, dry air, making them ideal for enclosed spaces where crews are working. Since combustion gases are vented outside, they’re a safe choice for occupied areas.
Direct-Fired Heaters
A cost-effective option for large, open, well-ventilated areas. These heaters produce powerful heat quickly but must be used with caution due to combustion byproducts.
Electric Heaters
A safe, emissions-free option, often used in smaller or enclosed spaces. Electric heaters are easy to set up but may not provide the large-scale heating power needed for bigger projects.
Hydronic Heaters
These systems circulate heated fluid through hoses or mats to warm concrete slabs, ground, or large areas. They’re excellent for projects requiring ground thawing or concrete curing.

Best Practices for Using Temporary Heat on Job Sites

Plan Ahead : Assess the size of your site, the type of work being done, and environmental factors before choosing a heating solution.
Prioritize Safety : Always use proper ventilation, monitor air quality, and follow manufacturer safety guidelines.
Combine Heat with Moisture Control : Pair heaters with dehumidifiers to maintain ideal conditions for materials and workers.
Monitor and Adjust : Use thermostats and sensors to keep temperatures consistent, preventing overheating or wasted energy.
Work with Experts : Rental providers can recommend the right equipment and set up efficient systems tailored to your project’s needs.

Keep Your Project Moving with Temporary Heat

Cold weather shouldn’t freeze your progress. With the right temporary heating solution, you can keep crews safe, protect materials, and maintain deadlines all winter long. Please call us for an estimate or project planning.

What seasons are dehumidifiers needed in construction and why.

Wed, 26 Mar 2025 21:33:12 GMT

Dehumidification On Construction Sites When Should You Have It and Why.

Seasons When Dehumidifiers Are Essential in Construction & Why

Dehumidifiers are particularly necessary during spring, summer, and early fall , when humidity levels are high. However, they may also be required in winter for indoor construction projects.

Why Are Dehumidifiers Important in These Seasons?

Spring & Summer (High Heat & Humidity)

Warm air holds more moisture, leading to excessive humidity in construction sites.
Moisture slows the drying time of concrete, drywall mud, paint, and adhesives.
Excess humidity can lead to mold growth on unfinished surfaces.

2. Early Fall (Lingering Moisture & Temperature Fluctuations)

Cooler nights and warmer days can cause condensation on materials.
High moisture levels in the air can delay finishing work like flooring and painting.

3. Winter (Indoor & Heated Construction)

Heating systems can create condensation inside enclosed construction sites.
Moisture trapped in materials (like concrete or wood) can freeze and expand, leading to cracks and warping.

What Happens If You Don’t Use Dehumidifiers?

Material Damage

Wood framing and flooring can warp or swell.
Drywall and insulation can absorb moisture, leading to structural weakness.
Metal components can corrode or rust.

2. Mold & Mildew Growth

Excess moisture creates an ideal environment for mold, leading to health hazards.
Mold can ruin materials, requiring expensive replacements.

3. Delays in Construction Timeline

Extended drying times for concrete, paint, adhesives, and coatings.
Flooring and drywall installation may be delayed due to moisture-related issues.

4. Compromised Structural Integrity

Wet insulation loses its effectiveness, leading to energy inefficiency.
Cracks in concrete due to trapped moisture can weaken the foundation.

When dehumidification is used to dry out buildings and materials, the dehumidifier runs continuously. The relative humidity is gradually lowered, allowing further evaporation from the damp materials in the room. The amount of evaporation depends on the temperature of the room, the materials and the humidity of the air.

One of the advantages of condense drying is that the drying process is stable and gentle. If time is not a crucial factor, the optimum dehumidification process is achieved by maintaining 68F degrees and approximately 40% RH in the room. This way, you maintain a perfect balance between the dry air in the building and humid building materials, avoiding surface drying and cavitation as well as damage to pre-dried materials such as parquet floors.

Add heat, if necessary, but keep in mind that forcing the drying process might be harmful. It creates a risk of surface drying and cavitation that only dries surfaces, leaving a lot of humidity inside the wall behind the dry surface. This prolongs the drying period as the humidity will not easily penetrate the dry surface. Surface drying also involves the risk of cracks appearing in the surfaces of walls, ceilings and floors.

It is important that the room/building is as sealed as possible. Also, make sure that the building is well protected against rain and snow. You need to ventilate while painting inside the building but remember to seal the room or building properly when it is empty. Moreover, remember to avoid pre-dried materials absorbing water because of open windows.

If the air change inside the room is not controlled, fluctuating ambient temperature and humidity conditions make it hard to control the drying process. In the winter, the cold outside air normally contains a minimum of water and the humidity is not likely to increase much even if the air change is considerable. Energy consumption, however, will increase dramatically as you need to heat up the cold incoming air. In the summer, the water content could be quite high, and you will have to remove even more water from the building or room if it is not sealed off adequately.

In most cases, the humidity is concentrated in cellars and in areas where water is being used in the construction work such as painting or concrete mixing. Set up your dehumidifiers where they do most good.

Overall u sing dehumidifiers helps maintain optimal humidity levels, ensuring efficient construction timelines and long-term material durability. In most big builds it is a must and will be stated on the drawings and on the contract. So, if you are a new GC make sure you read all notes on the building drawings. We here at On Time HVAC Rentals have all types of dehumidification and can walk you through the process of sizing your building for dehumidification. Give us a call at 215-520-6113.

What you need to know when renting a spot cooler.

Tue, 25 Mar 2025 13:57:40 GMT

What you need to know about renting spot coolers.

Summer is quickly approaching and renting a spot cooler during the summer can be an excellent way to stay cool without committing to a permanent cooling system. Or you might have a project coming up where you need temporary A/C. Here are some important things you need to know before renting a spot cooler:

1. Determine Your Cooling Needs

Size of the Space: Spot coolers come in various sizes, so you’ll need to assess the area you want to cool. Renting a cooler that's too small won’t effectively cool the space, while one that's too large may be unnecessarily costly.

Heat Load: If you're cooling a space with equipment that generates heat (like in a server room or a workshop), factor in the heat load when choosing a unit.

Cooling Capacity: Spot coolers are rated by their BTU (British Thermal Unit) output, so make sure the one you rent can handle the heat you're dealing with. Generally, a unit with higher BTU is needed for larger spaces.

2. Choose the Right Type of Spot Cooler

Portable Air Conditioners: Ideal for indoor spaces, these are most commonly rented for cooling offices, server rooms, or event spaces.

Evaporative Coolers: These are great for dry climates and work by adding moisture to the air to lower the temperature. They're energy-efficient but may not work as well in high-humidity areas.

3. Installation and Setup

Installation Requirements: Some spot coolers, particularly portable air conditioners, may require a window for venting hot air, typically in office buildings you would vent into a drop ceiling. Others might need to be placed near a power outlet, so ensure you have access to these features before renting. Spot coolers that are larger then 1.5 Ton need higher voltage. 2 Tons, 5 Tons & 7 Tons require a licensed electrician to install it. Also, a condensate pump might have to be hooked up as well depending on the size of the spot cooler.

Placement: Ensure that the spot cooler is placed in an area where it can circulate air efficiently. Obstructed airflow can reduce its performance.

4. Rental Duration

Short-Term vs. Long-Term: Spot coolers are ideal for temporary cooling needs, so consider how long you’ll need the unit. Most rental companies offer flexible rental periods, from daily to weekly, to monthly rates, so choose what best fits your needs.

Cost Considerations: Rental costs can vary based on the duration, the cooling capacity, and the brand of the unit. Factor in both the upfront cost and any additional fees for delivery, installation, and maintenance.

5. Maintenance and Upkeep

Filter Cleaning: Many spot coolers have air filters that need regular cleaning to maintain efficiency. Check with the rental company about any maintenance you’re responsible for. Also, a condensation bucket will need to be emptied on small units. Ask your provider on all instructions, if you rent from us, we placed a bar code that you can scan which pulls up the manual for easy access.

Monitoring Performance: Keep an eye on the temperature and humidity levels in the space to ensure the unit is working properly. If it starts underperforming, contact the rental company for assistance.

6. Energy Consumption

Electricity Costs: Spot coolers can consume a lot of energy, so be aware of how much it may add to your electricity bill. Some units are more energy-efficient than others, and you may want to ask about their energy usage before renting.

7. Delivery and Pickup

Transportation Logistics: Rental companies often deliver and pick up the spot cooler but check if there are any additional delivery charges or specific timeframes for this service. Again, if you choose us as your rental company the only fee will be the $150 delivery charge and the $150 pickup charge.

Set-Up Assistance: Some companies offer installation services, so ask if the unit comes with setup assistance to make the process easier.

8. Renting from a Reputable Company like US

Reputation and Reviews: Ensure the rental company is well-reviewed and reliable. A reputable company will provide clean, well-maintained units and offer customer support in case issues arise during the rental period.

Terms and Conditions : Review the rental agreement carefully, including any clauses about maintenance, damages, and insurance.

By knowing these key details, you'll be better prepared to rent a spot cooler that fits your needs, budget, and space requirements while keeping your summer cool and comfortable. On Time HVAC Rental has you covered on all aspects of renting equipment. We will make sure you have peace of mind. We deliver excellence from start to finish, prioritizing your satisfaction every step of the way.

By Erica Conallen

3-25-2025