On The Spot Air saved our lives! During the system 'summer tune up' & Phap found major problems with our 'new system' (installed in July 2015) ...it would fail a building inspection because of an improperly installed flue allowing Carbon Monoxide to flow back into the structure & a lack of a proper return plenum - no wonder we were suffering from headaches & fatigue. He explained what repairs were needed to bring the system up to code. On The Spot Air is polite, professional, low key & very reasonably priced.