In the world of home improvement, the allure of saving money by taking on do-it-yourself projects is undeniable. However, when it comes to installing complex systems like Mechanical Ventilation with Heat Recovery (MVHR), the potential pitfalls are numerous, and the consequences can be costly. We recently faced a situation where a homeowner was considering DIY MVHR systems and wanted to have their bricklayer carry out the majority of the install.
Let’s delve into the potential challenges and risks associated with this decision.
Why installing a DIY mechanical ventilation heat recovery system (MVHR) may not be such a good idea…
Interpreting Drawings and Designs
Installing a ventilation and heat recovery system requires a keen understanding of schematic drawings. Relying solely on your interpretation can be time-consuming and challenging, especially for those unfamiliar with reading complex designs. Mistakes in understanding the drawings could lead to improper installations and have repercussions for years to come.
Bulk Delivery of Parts
DIY MVHR systems mean that installers often receive a bulk delivery of ducting, parts, and accessories. Knowing where each component fits without clear guidance can be daunting. Understanding the system’s intricacies is crucial, as the drawings may not provide specific details on the placement of each section.
Costly Mistakes
Errors in installation can be financially disastrous. Air, being invisible, hides mistakes – that is until later stages of the installation process, potentially resulting in failed commissioning tests. Rectifying mistakes may involve removing ceilings, incurring additional costs and delaying the completion of the building handover. Seen on a call out to an MVHR installed by another company/DIYer which was causing the homeowner issues: Flexible ducting with harsh bends that will cause high degree of pressure on the installation which will cause noise issues, system potentially not achieving its flow rates due to high resistance and a system not as efficient due to the high resistance.
Air Leakages and Noise Issues
Incorrect ducting installation can lead to air leakages, condensation problems, and water stains on ceilings. A higher resistance in the installation may cause the MVHR unit to be noisy, impacting the home’s living comfort. These issues could result in discomfort, high running costs and health hazards.
Warranty Implications
Improper installation may invalidate the warranty of the MVHR equipment. Opting for an approved, competent MVHR installer ensures that the design is followed accurately, the installation is completed correctly, and commissioning is done properly, safeguarding the warranty. This is a common example of a poor installation we have seen on systems installed by some other suppliers/DIYers. This is a thermal break in the insulation around a pipe. It creates a cold spot on the ducting which results in condensation water dripping off the pipe. This water will then drip onto the ceiling below and create water stains.
Hidden Costs
Contrary to the belief that DIY is cost-effective, installing a heat recovery system yourself may prove to be more expensive in the long run. The labour time required is likely to be longer, and additional expenses for tools, drill bits, screws, fixings, core drill, core bits, and other accessories may accrue.
Air Leakages and Noise Issues
Incorrect ducting installation can lead to air leakages, condensation problems, and water stains on ceilings. A higher resistance in the installation may cause the MVHR unit to be noisy, impacting the home’s living comfort. These issues could result in discomfort, high running costs and health hazards.
Warranty Implications
Improper installation may invalidate the warranty of the MVHR equipment. Opting for an approved, competent MVHR installer ensures that the design is followed accurately, the installation is completed correctly, and commissioning is done properly, safeguarding the warranty.
Hidden Costs
Contrary to the belief that DIY is cost-effective, installing a heat recovery system yourself may prove to be more expensive in the long run. The labour time required is likely to be longer, and additional expenses for tools, drill bits, screws, fixings, core drill, core bits, and other accessories may accrue.
AVOID COSTLY MISTAKES, CONTACT US TODAY
Always seek expert advice from an MVHR installer and supplier
In conclusion, while the idea of DIY projects is enticing, certain endeavours, such as installing an MVHR system, require professional expertise. The risks of misinterpretation, mistakes, and hidden costs far outweigh the perceived savings. Opting for a qualified installer ensures a smooth, error-free installation and long-term functionality, ultimately enhancing the overall efficiency and comfort of the home.
To discuss your MVHR project and for guidance as to the best specifications then get in touch with us. We are UK and Ireland suppliers of the Dantherm MVHR range which includes the compact RCV 320 ventilation unit which is perfect for both retrofit and new build projects.
MVHR specialists. Who are JRL Group?
We are distributors of the Dantherm Climate Solutions range of mechanical heat recovery systems. Through our installation partners, we can be involved in the design and installation of your MVHR project ensuring that it runs smoothly and you have an efficient, quiet and effective MVHR system that will improve your living environment and air quality for years to come.
