Gas Safety in Welwyn Hatfield

Welwyn Hatfield covers Welwyn Garden City, Hatfield town, Old Welwyn, and Cuffley across AL7, AL8, AL9, AL10, and SG3. The district sits outside the M25 envelope which means planned PPM scheduling is preferred over reactive callouts. Affordable Water (now Affinity Water) supplies hard mains at around 280 ppm CaCO3, which feeds into combi heat-exchanger service intervals on annual servicing. Target dispatch time is 55 minutes from the NW10 depot. Our Gas Safe registration is 972173 (verifiable at gassaferegister.co.uk).

Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998 (GSIUR 1998) places the annual inspection duty on the landlord. The Landlord Gas Safety Record (CP12 or LGSR) is issued within 28 days of the inspection, and the tenant receives their copy inside the same 28-day window. For larger Welwyn Garden City rental portfolios we group properties onto a single visit run to bring the cost of dispatch down.

Each gas appliance is visually inspected for damage and combustion residue, working pressure is measured in kPa against the manufacturer data plate, gas tightness is verified using a calibrated digital manometer with a let-by check first, flue flow is proven with smoke pellets for open-flue appliances or an anemometer for room-sealed plant where indicated, and ventilation is calculated against BS 5440-2 for every open-flue installation in the dwelling.

Pricing excludes VAT. CP12 with up to three appliances is 125 pounds, each extra appliance is 20 pounds, CP12 plus annual boiler service combined is 210 pounds at the same visit, and a second boiler at the same visit is 95 pounds. Active gas leak: ring National Gas Emergency on 0800 111 999 first, then us for shut-off, BS 6891 carcassing repair, and re-certification.