It was unrelenting cold and then ice, not global warming, that forced the Vikings out of Greenland.
It was bitter winters, not heat waves, that finally defeated the armies of Napoleon and Hitler in Russia.
© Painting by Adolph Northen/Wiki CommonsRussian Winter: “Napoleon’s Retreat from Moscow”.
Snowy blizzards periodically kill more cattle than heatwaves in Colorado, South Dakota and Texas.
When the Tambora volcano exploded in 1816 it spewed massive volumes of ash and "greenhouse" gases including carbon dioxide into the atmosphere. There was no global warming from the greenhouse gases, but the heat-blocking ash-filled atmosphere and a quiet sun caused "the year without a summer". Failed crops and famine stalked Europe, Asia and America.
It is icebergs, not warm oceans, that sink ships like the Titanic, and spreading sea ice trapped "The Ship of Fools" in Antarctica.
Every major geological era has ended with massive volcanism on land and under the seas. Molten lava heats the seas and eruptions on land fill the atmosphere with dust which blocks incoming solar energy. There is rapid evaporation from the warm seas followed by rapid condensation in the cold dark atmosphere. This process dumps massive snowfalls which become ice sheets on land, starting a new ice age and bringing the extinction of many species.
It is lethal global cooling we need to fear, not life-sustaining global warming.
The problem with HVAC people avoiding working on the furnace seems to be that there is unpermitted work that happened before I bought the house. I, now the responsible party, do not intend to allow yet more unpermitted work. I would actually be being used to cover up the previous problem work. Is this the norm today?
I may be giving too much thought to this but I want to install an inexpensive direct vent counterflow natural gas wall furnace with the install being done by certified professionals, with both costs of approx. $1300 totaling $2600, rather than wade into the dark waters of a central heat furnace with duct work that is the result of adding a modern gas furnace to existing ductwork for a steel wood/coal burner. The modern gas furnace being installed backwards for some unknown reason. Do I want to touch that mess? No. And the HVAC people don't want to either. I greatly fear that more tinkering on the central heat system would rise to the level of the national debt.
No wonder why I choose a totally new option: new furnace in the living room of my very small 1,000 sq ft house.
I was asked by one HVAC who did not present a promised estimate, when I discussed my desire for a new heating system, would I mind the wall duct openings just sitting there not needed. What would I do about them? Are you warm now?