As your annual boiler inspection comes around, it’s the perfect time for your technician to survey cracks, leaks, pitting, buildup, corrosion, sludge, or anything that may indicate the beginnings of a long-term problem. However, boiler inspections aren’t only limited to the boiler itself but cover other critical parts of your system such as your deaerator, feedwater system, pumps, and motors. A top-quality boiler hire service will successfully accomplish the following.

Identifying and addressing subtle problems

To the untrained eye, pitting, corrosion, sludge, and mould buildup, and damage to water level probes won’t be obvious. For a boiler hire technician, however, they’ll likely be the easiest to spot.

One of the standard assessments a technician will almost always utilise is a hydrostatic pressure test, especially for boiler systems that don’t incorporate too many extra parts. Technicians will also open up your furnace, waterside, and the occurrence of any low water cutoffs. However, some boilers will be but a small component of a much larger system, which will then call for a more thorough inspection. 

Depending on whether you employ a boiler with a spray head or tray, or one with a vented tank with a steam sparge tube, it’s important to have every component inspected. Technicians can determine whether your motor is experiencing problems by taking a megohmmeter reading of your blower motor or pump motor system. 

Similarly, if your feedwater pumps are sounding louder than they normally do, your impeller might be experiencing cavitation damage. They’ll also be able to identify whether you’re better off with a repair or total replacement. 

Checking feedwater piping

Most amateur technicians will overlook feedwater piping but a professional technician will take the time to inspect your insulation. Feedwater pipes increase thermal efficiency and minimise hot surfaces, so even the smallest leak could cause the pipe to oxidise rapidly and eventually burst open. Un-checked bursts can cost you expensive pipe replacements. Spot-checking every now and then can prevent major structural failures. 

Observing fresh combustion air

Combustion air intake systems are often neglected—and they shouldn’t be! Debris such as plant growth and animal nesting materials can impede the louvres or intake of your blower, restricting the burner’s intake of air. This can prevent proper combustion from taking place if your burner’s air-to-fuel ratio is disrupted.  


Any boiler room is essentially employing its own industrial ecosystem that depends on dozens of pieces of equipment. During a routine maintenance check, it’s imperative that you have your technician take a look at items that aren’t necessarily included in your maintenance schedule. Though your boiler itself may be in great shape, it won’t be for long if the processes that support it fail. 

The top boiler hire company in London, we at London Climate Hire specialise in the rapid installation of temporary boiler hire and heater rentals. Being that hot water heating is essential to any home or business, we understand that having a working boiler is of utmost importance. Thus, we make it a point to be available to you 24 hours a day, 7 days a week!