Planned Maintenance Contracts, Gas & Oil Safety Inspections & Compliance

From time to time, things go wrong — and you need your heating, air conditioning or plumbing fixed properly, not patched up.
Whether it’s commercial boiler servicing, air conditioning servicing or a commercial gas inspection, our engineers have the experience to diagnose problems quickly: whatever’s broken, chances are we’ve seen it before and know exactly what to do. But most breakdowns are avoidable, which is why commercial HVAC maintenance is one of the biggest parts of what we do, not an afterthought to installation.
Why Planned Maintenance Matters
Done well, planned maintenance contracts pay for themselves: regular servicing catches small issues before they become expensive breakdowns, keeps your systems running at their most efficient (so lower energy bills, not just fewer faults), extends the working life of expensive equipment, and gives you the paperwork you need to demonstrate compliance — whether that’s for insurers, landlords or your own health and safety records. It also means predictable, budgeted costs instead of surprise repair bills.
How Often Does It Need Servicing?
Gas Appliances
12 MONTHS
A legal requirement to service and certify every 12 months
Air Conditioning Systems
6 MONTHS
Recommended every 6 months
Evaporative Cooling Systems
6 MONTHS
Recommended every 6 months
What’s included in a planned maintenance contract
Commercial gas safety certificate inspections — carried out by Gas Safe and OFTEC registered engineers, giving you the compliance paperwork you need
Annual service agreements including air conditioning servicing, with six-monthly servicing where required, to keep systems running efficiently and reduce the risk of unplanned downtime
Planned preventative maintenance contracts covering heating, cooling and plumbing — one point of contact for all your planned works
Plant room and pipework services, including inspection and repair of pumps, controls and valves
Supporting Services
Legionella compliance remedial works only
(Del Sol does not carry out the risk assessment itself — see note below)
Gas installation, let-by and tightness testing (UP1A & UP1) and commercial gas, oil & LPG safety inspections
Gas and water pipework installation — press-fit stainless steel, copper, screwed steel, MDPE and plastic pipe
Mechanical plant room services — service, inspection and repair of pumps, controls and valves
In the rare event of a fault, our qualified plumbers respond promptly — resolving issues efficiently with minimal disruption to your operations.
Who This Is For
Built for facilities and maintenance managers who need reliable, documented compliance across a site, and for business owners who’d rather budget for planned servicing than face an unplanned system failure.
Why Choose a Del Sol Maintenance Plan

Frequently Asked Questions
Depending on your systems, this can include gas and oil safety inspections, annual or six-monthly servicing, and planned preventative maintenance for heating, cooling and plumbing.
Yes — a commercial gas safety certificate is required every 12 months, issued by a Gas Safe registered engineer after a commercial gas inspection. It’s not optional, and the paperwork matters for insurance and compliance as much as the inspection itself.
No — Del Sol’s service and maintenance plans are built around planned, scheduled visits rather than 24-hour emergency response. Some competitors lead with rapid emergency call-out; we’d rather help you avoid the emergency in the first place with proper planned maintenance.
