Heat Recovery Ventilation

About Heat Recovery Ventilation

A heat recovery ventilation system makes the most of the world around it. The systems rely on existing warm air or water on a property to heat the designated area. 

In a standard heat system, air circulates and turns stale. The stale air is replaced by colder air and then expelled into the atmosphere. By opting for heat recovery ventilation, the heating system now can recycle warm air. Recycling this resource increases the efficiency of a current heating system. 

Advantages and Application

Improved Air Quality

Heat recovery ventilation gives properties a self-contained environment. By recycling air that already exists, the results produced are cleaner and better for personal health. This functionality is similar to mechanical ventilation systems, which optimize carbon dioxide and oxygen circulation. The improved air quality means less pollen and pollution in the working and living environment. 

Constant Airflow

Using heat recovery ventilation systems (HRVS) supplies buildings with constant fresh airflow. In colder seasons, if a window is open, the environment experiences a loss in heat. HRVS retains this heat, so when it's required again, it's already present. 

High Energy Efficiency & Cost Savings

Since HRVS helps internal temperature remains constant, energy efficiency is increased. Buildings no longer lose heat or air, so occupants remain comfortable. And this optimal energy efficiency also reduces energy costs. Homeowners and business owners alike can stay cosy while still saving money. 

Better for Environment

Heat recovery ventilation is ideal for those making environmentally-conscious decisions regarding a property. Recycling used air, rather than expelling it, results in lower carbon dioxide emissions. 

Optimal for Commercial Use

Business and industrial settings can see the most advantages in heat recovery systems, considering they produce more energy than households. Employees are exposed to cleaner and more comfortable air year-round. Additionally, overhead energy costs are drastically reduced despite efficiency significantly increasing. 

Types

Centralized Systems

Centralized HRVS offer the most significant air recovery efficiency due to their large size. The machinery typically uses two large wheels, where one half draws in the stale air while the other takes in outside air. The wheel rotation brings the stale exhaust to the fresh air, which heats it. 

Ductless HRV

Ductless units are ideal for single rooms, flats, and small household spaces. The system is easily installable on exterior walls and does not require a duct system. These are typically low-maintenance and, like passive ventilation systems, don't require adjustments following the initial installation. 

Dual Operation 

Industrial and office spaces have different climate requirements than households - even across specific rooms in one building. Tech, lighting, and other office equipment can alter temperature needs. Even in winter, certain spaces may require cooling. In this case, HRVS models that offer larger control are best. Dual operation models allow administrators to heat and cool different parts of the building. 

Factors

Practicality

When an individual is considering an HRV system, they should first examine their surrounding climate. In milder temperatures, HRV systems aren't practical. This is especially true if a property does not use heating or cooling systems. However, should a building not require winter heating solutions, other ventilation systems offer the benefits of fresh, breathable air year-round. 

Efficiency Rate

HRV systems see the most use in cold environments to ensure buildings remain warm and ventilated throughout winter. These units are highly efficient in these environments. Even hot climates can benefit from an HRV, as the system still assists air conditioning unit workload and lowers cooling costs. 

When choosing an HRV system, it's important to select models with high energy ratings to guarantee the best savings. 

Warranties

Examine the warranties offered by an HRV system, primarily if used in an industrial or office space. Higher-end models may even offer limited lifetime warranties. 

Features

Remove Moisture 

The HRV system warms the air, which results in a reduction of humidity. Therefore, buildings with these units installed see less moisture in the environment. 

Reduce Odors and Contaminants

When moisture is removed from the environment, this also takes care of any associated smells and allergens. This feature improves air quality and extends the life of an HVAC unit.  

Enhanced Comfort 

HRV systems invite in continuously fresh, filtered air that is pre-heated and circulated through the building. This reduces an HVACs workload and eliminates the possibility of inconstant air or uncomfortable drafts. 

Design

Domestic

Domestic HRV system models are available for whole-home heat recovery and single-room or small-space recovery. The size requirements depend on the size of space a homeowner has. Single-room systems function where it's installed and usually don't require ducts. Whole-home systems work on the entire area but may require internal ducting. 

Commercial

Commercial designs are more significant in design but offer more potential to business spaces. Additionally, commercial recovery units allow for climate control between different areas of a business. 

Installation

The installation will depend on the HRV system chosen. Single-room units can be self-installed, while large systems will require assistance from a professional. 

Care and Maintenance

Once again, the required maintenance will depend on the select unit. However, regular care may include: 

• Clearing or replacing filters
• Annual or semi-annual inspection
• Cleaning of ductwork and other ventilation components necessary for optimal operation