Planned preventative maintenance contracts for residential blocks, apartment blocks, build-to-rent and commercial buildings across Hertfordshire: HIU, FCU and MVHR servicing, communal heating, air conditioning and landlord compliance.
Mainteniq takes block maintenance contracts and planned preventative maintenance (PPM) across Hertfordshire, for managing agents, RTM and RMC directors, build-to-rent operators and owners of commercial buildings.
Hertfordshire has 10 district and borough councils, from Watford and Three Rivers in the south-west to North Hertfordshire and East Herts. We work in all of them, from town-centre apartment blocks to commercial buildings.
Our same-day response target applies in London. For Hertfordshire contracts, response times are agreed in writing in the contract, and contract clients get priority on our emergency line.
England-wide landlord rules apply in Hertfordshire: an annual gas safety check by a Gas Safe registered engineer and an electrical inspection at least every 5 years.
Many newer apartment blocks run on a communal boiler or heat network with an HIU in each flat. Ofgem now regulates heat networks in Great Britain, which raises the bar on maintenance records.
01 · Ofgem regulation
Ofgem became the heat network regulator on 27 January 2026, with rules introduced in phases.
02 · Registration deadline
Ofgem says heat network operators and suppliers must register by 26 January 2027.
03 · HIU servicing
Annual HIU servicing by SAV Advanced HIU Service Engineers: strainers, plate heat exchanger, valves, controls.
04 · Plant room records
Written, photographed reports for pumps, pressurisation units, plate heat exchangers and controls.
We do not operate heat networks or register them with Ofgem. We maintain the building-side plant and in-flat equipment that the block is responsible for, once we have seen the O&M manual and handover documents.
Services
A PPM contract for a Hertfordshire residential or apartment block is built around its plant, its flats and its compliance calendar.
New-build and build-to-rent blocks in Hertfordshire towns often combine communal heating, fan coil air conditioning and MVHR.
One schedule for the certificates landlords and managing agents in Hertfordshire need, with renewal reminders.
Offices, business parks and mixed-use buildings in Hertfordshire need compliant air conditioning servicing and building controls support.
Where we cover
Watford
Town-centre apartment blocks and commercial buildings
St Albans
City and district: managed blocks and private rentals
Hemel Hempstead
Dacorum: residential blocks and business parks
Stevenage
Town-centre blocks and commercial premises
Hatfield
Welwyn Hatfield: residential blocks and student lets
Welwyn Garden City
Welwyn Hatfield: managed flats and offices
Hertford
East Herts: managed blocks and private rentals
Bishop's Stortford
East Herts: newer apartment blocks and private rentals
Borehamwood
Hertsmere: residential blocks and commercial premises
Cheshunt
Broxbourne: residential blocks and private rentals
Rickmansworth
Three Rivers: managed flats and offices
Letchworth & Hitchin
North Hertfordshire: managed blocks and private rentals
Why Mainteniq
More than 15 years of air conditioning, heating and building maintenance experience on every contract.
Quoted per unit. Survey credited against year one. No charge for flats we cannot access.
Every visit ends with a written and photographed report, so you have a clear record for each flat.
Boiler servicing and CP12 certificates are carried out by Gas Safe registered engineers. Mainteniq itself is not Gas Safe registered.
REFCOM F-Gas company certificate REF1024168 (to March 2029), NICEIC Domestic Ventilation DV-02, SAV Advanced HIU Service Engineer PERS-30839.
Response times in Hertfordshire are agreed in your contract, with priority for contract clients and same-day attendance where possible.
Our office is at 3 Monck Street, Westminster SW1P 2FA. Also see our coverage in Essex, Camden and Brent.
Call or message Petru to discuss a planned maintenance contract, HIU and FCU servicing, or compliance certificates for your Hertfordshire block. Every quote is tailored after a site survey.
Emergency line. Same-day response across London.
Something broken right now? Speak to an engineer.
A clear price before any work starts, and a written report after. For planned servicing, compliance certificates and contracts, WhatsApp us and we will call you back.
REFCOM certified REF1024168Gas Safe registered engineersSafeContractor approvedNICEIC certified electricians