They outfit their three technicians' vehicles with five-gallon water jugs and check that the air-conditioning units are always functioning properly.

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Mold in homes hasn't been tracked historically, but certain building practices like making homes more airtight, installing air-conditioning units and using materials like drywall and oriented strand board, an engineered wood product have made homes more conducive to mold growth than they were in the past, says Jeffrey May, principal scientist at May Indoor Air Investigations based in Tyngsborough, Mass.

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Plants release moisture into the air alleviating the dry atmosphere generated by air-conditioning and central heating units, as well as computers.

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The expansion incorporates a fully-automated assembly line for air handling units and four production lines for ductless air-conditioning and heating systems.

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Not central air-conditioning, mind you, but window units that one could leave off if the idea of being comfortable in summer were despicable.

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Before you rush out and order a geothermal system, remember that furnace and air-conditioning technology has advanced as well, with new units 20% more efficient than a decade ago.

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Napcabs are German-engineered, 4sqm self-service units, equipped with amenities such as double beds, worktables and air conditioning units.

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