Under carpet heating

Types of Under Carpet Heating

There are two main types of under carpet heating systems: electric and water-based (hydronic) systems. Each has its own characteristics, components, advantages, and disadvantages.

• Electric Under Carpet Heating

  This system uses electrical energy to generate heat. Electric under carpet heating mats or cables are installed underneath the carpet to provide radiant heat directly to the carpet and the room.

  The system consists of the following components:

  • Heating Mats or Cables

    Heating mats are pre-spaced electric heating cables on a flexible mesh mat. The mats are easier and faster to install than heating cables, which require careful spacing during installation. Electric heating cables have a durable plastic outer insulation to protect against moisture and damage. They connect to an electric power source to generate heat when installed under the carpet.

  • Thermostat

    An electric under carpet heating thermostat controls the temperature. It usually has a floor sensor that reads the temperature of the carpet. Programmable thermostats allow for setting different temperatures for different times. This can save energy by not heating as much when the room is not used.

  • Temperature Sensor

    An electric under carpet heating temperature sensor is a device that monitors the temperature of the heating mat or cable. It sends this information to the thermostat so that the thermostat can maintain the desired temperature. Without a temperature sensor, the system could overheat or not provide enough heat.

• Water-Based Under Carpet Heating

  This system is also known as hydronic under floor heating. It uses hot water to transfer heat. The water is circulated through pipes installed under the carpet. A boiler or water heater heats the water to a comfortable temperature that radiates warmth into the room.

  The system comprises the following components:

  • Pex Pipes

    Pex pipes are flexible plastic tubes. They carry hot water to transfer heat underneath the carpet. Pex pipes work well for hydronic heating because they do not rust and can withstand high temperatures and pressures.

  • Manifold

    A manifold distributes the water. It is like a central hub with pipes connected to send hot water to different areas. As the carpeted rooms cool, the manifold sends hot water through the appropriate pipes to raise the temperature again.

  • Boiler or Water Heater

    A boiler or water heater heats the water to a comfortable temperature for hydronic heating. It must be powerful enough to supply all the rooms that need warming.

Functions and Features of under carpet heating

Under carpet heating systems are electric heating mats or cables installed underneath carpets to provide warmth. Here are their functions and features:

• Heat Distribution

  Under carpet heating systems are not only for comfort but also for efficient heat distribution. The electric heating cables or mats are evenly spread out under the carpet, ensuring that heat is uniformly distributed across the entire carpeted area. This uniform heat distribution prevents hot and cold spots, creating a cozy and inviting atmosphere in the room. Not just that, but the even distribution of heat also protects the furniture from warping due to uneven heat exposure.

• Quick Warm-Up

  These systems are designed to provide quick warm-up times. Once the heating system is turned on, the electric heating elements rapidly generate heat that is immediately transferred to the carpet and room. This quick warm-up time is particularly beneficial during colder months when warmth is needed.

• Energy Efficiency

  Under carpet heating systems are designed with energy efficiency in mind. They provide zoned heating, allowing users to heat specific rooms or areas instead of the entire home. This targeted heating reduces energy wastage and can lower utility bills. Additionally, these systems work best with energy-efficient thermostats that optimize consumption by scheduling and maintaining desired temperatures.

• Compatibility with Different Flooring Types

  While primarily used under carpets, underfloor heating systems can be compatible with various floor types when used in overfloor heating. For instance, they can be used under laminate, vinyl, and tile floors. However, the effectiveness and efficiency may vary depending on the flooring type. For example, tile and laminate are excellent heat conductors, while carpet is a poor heat conductor. Therefore, underfloor heating systems are best suited for use with carpets.

• Easy Installation

  Under carpet heating systems are designed for straightforward installation. For instance, the underfloor heating mats come with adhesive backing, allowing easy placement on the subfloor. The cables are also flexible and can be installed in various floor layouts. Most systems require no professional installation, making them a DIY project.

Scenarios of under carpet heating

There are various applications of under carpet heating, including the following;

• Cold Climates

  Under-carpet heating is especially useful in cold climates where traditional heating methods may not provide sufficient warmth. The system provides consistent and comfortable heat, preventing cold floors and creating a warm living environment. This is particularly beneficial in areas such as the living room, bedroom, and home office, where a cozy atmosphere is desired.

• Energy Efficiency

  For homeowners looking to reduce energy consumption and lower utility bills, under carpet heating systems can be a highly energy-efficient solution. These systems, particularly electric radiant heaters, operate at a lower temperature while still providing adequate heat. As a result, they can complement or even replace traditional heating systems, leading to overall energy savings.

• Allergy Concerns

  Homeowners with allergies or respiratory issues may benefit significantly from under carpet heating systems. These systems help reduce the circulation of allergens and dust particles that are typically stirred up by traditional forced-air heating systems. As a result, they contribute to cleaner and healthier indoor air quality.

• Easy Installation

  Under carpet heating systems are ideal for homeowners seeking hassle-free heating solutions. These systems can be easily installed without major renovations or alterations to existing flooring. Whether using electric mats or cables, homeowners can add heating to their spaces by simply placing the system under the carpet.

• Supplemental Heating

  Under carpet heating can serve as a supplemental heating source in rooms that require extra warmth. For instance, in rooms facing north or those with large windows, such as living rooms and home offices, under carpet heating can complement the central heating system. This targeted heating approach not only enhances comfort but also reduces the workload on central heating systems, leading to increased efficiency.

• Specific Rooms

  Under carpet heating systems can be used in specific rooms where heated flooring is desirable but not feasible. These rooms include bedrooms, living rooms, and home offices. Heated flooring in bedrooms and living rooms creates a warm and inviting atmosphere. In bedrooms, the gentle warmth can enhance relaxation, making it easier to unwind. In living rooms, especially during cozy family gatherings or quiet evenings, the warmth adds to the comfort.

How to choose under carpet heating

Choosing the right under-carpet heating system involves considering several factors to ensure it meets the requirements of the space where it will be installed. Here are some key elements to consider before buying:

• Type of heating system

  There are two main types of electric underfloor heating mats: single and dual. Single wire mats are the most popular choice because they are cheaper. They work best in small rooms, like bathrooms. In bigger rooms, the mats can be linked to a thermostat that controls the heat across different parts of the room. Dual-wire mats are more advanced. They have two wires and special insulation. This makes them better for larger areas. The insulation helps the heat spread evenly. The wires are also placed closer together so the floor gets hotter. Dual mats cost more but are good for kitchens or living rooms where heat is needed all over.

• Heat output

  Heat output is measured in watts per square meter (W/m²). This shows how much heat the system can give. Different rooms need different heat levels. For example, a living room may need 100-150 W/m². But a bathroom needs more heat to keep people safe from slipping on wet floors. It could be 150-200 W/m². When choosing a heating system, look at the heat output. Make sure it's right for the room. Too little heat won't keep the room comfortable. But too much heat could waste energy and even damage the flooring.

• Compatibility with flooring

  Compatibility with flooring is very important when choosing an under-carpet heating system. Different types of heating systems work better with certain floor materials. For example, electric heating is good for carpets but not as efficient for tile or laminate. These materials transfer heat well. So, it is essential to check if the heating system is compatible with the specific flooring material before making a choice. This will ensure safety and that the system works as intended.

• Room size and insulation

  When considering under carpet heating, it is important to look at the size of the room. Bigger rooms need more heating mats or cables for the floors to be heated evenly. Manufacturers have guides to help install the right amount of heating for different room sizes. Insulation also affects how much heat is needed. Well-insulated rooms stay warm longer and need less heat. But drafty or poorly insulated rooms lose heat quickly. They may need a heating system with high output. Always consider the room's insulation to determine the right under-carpet heating.

under carpet heating Q&A

Q: Can you put carpet glue on a heat mat?

A: No, do not glue the carpet directly to the heat mat. The glue can damage the heat mat or trap heat, causing overheating. Always lay the carpet loosely over the heat mat without glue.

Q: How long does it take under carpet heating to warm up?

A: Most systems take 30 minutes to 1 hour to raise the floor temperature to the desired level. Carpet heating systems provide gradual, consistent warmth over time.

Q: Can heated mats be used as primary heat sources?

A: Heated mats can supplement existing heating or be used as primary heat in small rooms like bathrooms. They provide localized heat where needed. For whole-home heating, underfloor heating is better.

Q: How do you maintain under carpet heaters?

A: Maintenance is minimal. Simply vacuum the carpet as usual. Do not use water or detergents on the heating pads. They are durable and designed for use under carpets.

Q: Can heated mats damage carpets?

A: No, heated mats will not damage carpets if used properly. Choose mats approved for use under carpets. Do not exceed recommended wattages. Avoid using adhesive to attach the mat to the carpet.