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Article 3
The energy efficiency improvements specified by article 3 are—
(a)air source heat pumps;
(b)biomass boilers;
(c)biomass room heaters (with radiators);
(d)cavity wall insulation;
(e)chillers;
(f)cylinder thermostats;
(g)draught proofing;
(h)duct insulation;
(i)gas-fired condensing boilers;
(j)ground source heat pumps;
(k)hot water showers;
(l)hot water systems;
(m)hot water taps;
(n)external wall insulation systems;
(o)fan-assisted storage heaters;
(p)flue gas heat recovery devices;
(q)heating controls for wet central heating systems or warm air systems;
(r)heating ventilation and air-conditioning controls (including zoning controls);
(s)high performance external doors;
(t)hot water controls (including timers and temperature controls);
(u)hot water cylinder insulation;
(v)internal wall insulation systems (for external walls);
(w)lighting systems, fittings and controls (including rooflights, lamps and luminaires);
(x)loft or rafter insulation (including loft hatch insulation);
(y)mechanical ventilation with heat recovery systems;
(z)micro combined heat and power;
(aa)micro wind generation;
(bb)oil-fired condensing boilers;
(cc)photovoltaics;
(dd)pipework insulation;
(ee)radiant heating;
(ff)replacement glazing;
(gg)roof insulation;
(hh)room in roof insulation;
(ii)sealing improvements (including duct sealing);
(jj)secondary glazing;
(kk)solar blinds, shutters and shading devices;
(ll)solar water heating;
(mm)transpired solar collectors;
(nn)under-floor heating;
(oo)under-floor insulation;
(pp)variable speed drives for fans and pumps;
(qq)warm-air units;
(rr)waste water heat recovery devices attached to showers;
(ss)water source heat pumps.
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