No service inside house

Lands phones...

Typically means NO RADIO involved
(POTS refers to "Plain Old TELEPHONE Service")...

A POPULAR (and much cheaper) alternative to
"twisted pair" hard wired telephone service... is the
newer PACKET phone service...

All these (here in the USA) typically include
a CUSTOMER "network interface ... Commonly
outside your house where the "phone wires" enter.

Your side of the box should have an RJ11 plug
inside. You can RELEASE the MODULAR wire
exactly as you do... inside of your house...

If properly wired.. YOUR ENTIRE HOUSE is
on the wire you just unplugged (TELCO is in the
RJ11 jack).

Plug in a GOOD working phone into that
connection...

If you still have NO-DIAL-TONE you have just
verified the trouble is OUTSIDE (no charge for repair)...

Please for BETTER trouble assistance...
IDENTIFY your "provider".

Carnac the Magnificent

If you live in the US, the telephone lines outside the house are the responsibility of the telephone company to repair/replace. You must be certain that it is the outside lines, though. If they come and find that the problem was not theirs, they can charge a service fee, even if you refuse to have them come inside and repair the problem.

are you talking about a 'split system' here - as in a house - where you have an inside unit and an outside unit?

If so - when you say you had the 'breaker' off - are you talking about the breaker to the 'outside' unit or the breaker to the 'inside' unit?

Note: on split systems you have a breaker that controls the outside unit and you have a breaker that controls the inside unit.

Typically - the outside unit has a breaker box/fuse box outside with the unit although you will also have a breaker in the main breaker box too, which is usually located in the garage or house somewhere.

The inside unit (usually located in the garage or house somewhere) will not have a breaker box/fuse box, (will merely be plugged in to the wall) but will have a breaker - also - in the main breaker box.

The importance of these questions is because it's possible you 'shorted' your transformer (located in the inside unit) when you changed the thermostat. Although if you had the inside breaker off while you were changing it (thermostat) - I don't see how you could of did this.

In any event - do you remember seeing a spark when you were changing out the thermostat?

If so, then I'm betting you shorted out the transformer.

If that's the case - I would recommend calling a Service Tech - because changing a transformer and 'clearing the short' is sometimes a complicated process - and unless you are fairly adept mechanically and electrically - I would advise getting a professional to do this.

In any event - he/she should be able to solve your problem for only a nominal service call.

good luck!

Open up the inside unit pannel where the drain pipe is and you'll see a drain pan where the condensation water runs out to the drain , clean the drain pan and the hole and then with air pressure from an air compressor blow the drain from inside to outside and go outside the house where the drain discharged and you'll see the clogh that came out from the drain . To keep the drain clean , pour a cup of bleach or clorox every 3 or 4 months through the drain and in the drain pan.

Check outside unit to see if running if not check breakers and see if there is float switch inside the air handler inside. There is only so much you can do. Calla service tech for free estimate. Russ

If the outside unit is running and the inside unit is not, probably a problem with the fan motor itself or its capacitor. If you have to have someone repair or replace the fan $200-$250 with parts, a capacitor for a service call and part $100 or so. Check it yourself first to see if there is anything obvious broken wire, hot connection, etc if you feel safe doing that. Turn the power off first. There is also a chance the thermostat could be the problem. Have you tried running the fan on the thermostat "fan on" setting?

dual source button, and switch them around to your choice of in/out sounds

Look behind the dryer for a kinked or crushed vent. This is the main cause for long dry times. If the dryer is on an outside wall in the house, go outside to check the vent hood for blockage. Check inside the vent hood for a wasp or bee nest before reaching inside to remove the lint that may be keeping the flapper from opening fully.
If this does not solve the problem, refer to a qualified service technician to diagnose for internal problems.

Is the outside compressor running? Check the fuses in the outside disconnect by the outside condensing unit. Also check the breaker for the A/C in the main power panel.

A short inside the house should also disable the DSL service, but you can rule out this possibility by disconnecting the inside wiring from the outside wiring at the entrance box. If you still can't get a dial tone when you clip onto the incoming wires, then you need to contact your local phone company to have them find the problem and restore your phone service.
Good luck...and I hope this is helpfull!!